Why do Dogs Eat Grass?

animals environment

There’s a lot of debate about why dogs eat grass. Some dogs seem to act like mini lawnmowers, eating grass at every opportunity. Others dogs eat grass only occasionally, subsequently throwing it up.

So do dogs eat grass to throw up? This is a debatable issue. This wisegeek author has observed her dog fling himself at the door to get out to grass and eat a few mouthfuls, usually when his stomach is upset. He also appears to do it when he has something stuck in his throat. The end goal of the dog seems to be to throw up.

There actually appears to be two types of grass eating behavior in dogs. Some dogs take a few nibbles, while others eat quickly, barely chewing the grass. Unchewed grass often translates to near instant vomiting. Dogs that are careful grazers, on the other hand, may not get sick from grass.

The latter case suggests that some dogs eat grass because they enjoy it. Most dogs don’t need it to supplement their diets, but because dog diets are primarily made up of herbivores, that grassy taste may be reminiscent of the cattle or lamb product they had for dinner. Some dogs also enjoy green vegetables like broccoli.

If your dogs eat grass on a regular basis, this could suggest dietary imbalance, though many vets might dismiss it. You may want to consider giving the dogs some green vegetables if they appear to want “something green.” Cooking the vegetables first may make them more digestible, resulting in less vomiting.

It’s also important to be careful when your dogs eat grass regularly. Grass from manicured lawns can contain fertilizers and pesticides, which can be toxic to dogs. Instead of allowing “grazing” behavior on lawns, consider providing some doggy grass at home that is not treated with chemicals. Also, if your dogs eat grass all the time, don’t walk them on lawns that have been recently treated with chemicals. Most of these chemicals will break down in a few days, but during the first day or two after treatment, grass-eating behavior could translate to more than tummy upset.

If your dogs eat grass as a new behavior, and are exhibiting frequent vomiting, it’s also important to check with a vet. A dog that suddenly begins to have a taste for grass may be trying to compensate for gastrointestinal problems. This could signify viral or bacterial infections and might require veterinary treatment. On the other hand, when dogs eat grass only occasionally, you can chalk this up to normal canine behavior. A mouthful of grass or two may mean cleaning up some nasty dog messes, but it is unlikely to signify poor dietary health or illness.

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60
i've heard that eating grass means that a dog has a stomach ache.
- anon50155
59
so what if dogs eat grass? They seem to be fine, so i say just let them do their thing. they seem to be just fine. it's a dog thing and we may never understand.
- anon49883
58
you know, dogs eat grass all the time. i'm amazed at how seriously all of you took this. it's a dog eating grass. who gives a crap? i've seen my dog eat grass and i just looked at him and said dude, what are you doing? that was it.
- anon48844
57
re: vitamin 17: there is no such thing, it was/is a made up name for a glycoside. Do some research on the name.
- anon45075
56
Anon43874, please take your dog back to the vet. The vet may be able to prescribe something in a liquid form you can give, and also give your dog an antibiotic injection to get his immune system kick-started. Your dog may also need IV fluids. The other thing you might think about is contacting a compounding pharmacy in your town. They can often put medication in some sort of form that your dog will eat: lollipops, a sweet-tasting liquid suspension, etc. But the first thing is to take your doggie back to the doctor.
- anon43878
55
My dog ran away five days ago. I found him the following morning and he had been in a really bad dog fight, or at least that's what I suppose. He had very bad bite and scratch marks on his rear legs and could barely walk. I took him to a vet clinic right away and they clipped and cleaned his wounds. it turned out that there were no broken bones on the left rear leg but there were very severe bite wounds. They bandaged his leg up and sent home pain medicine, an antibiotic and an anti-inflammatory medicine. He is not good with pills. Usually I have to dissolve them in hot chocolate and he will have them that way but this time around he won't have any hot chocolate. I've tried marshmallows, dog food, table food, rice, brownies. For three days I've been able to give him the pills by sticking them in canned vienna sausage; the vet advised me he should eat since the medicine would probably be rough on his tummy. All I could get him to eat were those sausages and now he won't eat anything. In the past 5 days all he's had are about 5 or 6 cans of vienna sausages and about 1 can of dog food total. Today he's been eating grass and throwing up all day. I can't get him to eat anything. Any advice? I'm obviously going to stop the medication as I assume they are what is making him sick. Please give me some advice.
- anon43874
54
i have two dogs and i started taking them outside to use the bathroom. then i noticed they started eating grass. is that good for them or is it bad? they don't throw up but then again they don't eat very much of it! but i have caught them quite a few times eating it! they are not constipated and they seem to act normal so my question is what should i do keep them from eating my grass? should i change their food? is it bad for them or is it good for them?
- anon41020
53
I had my dog for a while and he use to be a inside dog until we had to put him outside and since then he has not been eating his food --just grass. When I try to give him food inside the house he still doesn't eat it. Why?
- anon40685
52
I just bought a 6 month old female boxer a few days ago and she ate a lot of grass this morning and when I brought her inside, she threw it all up and it smelled awful! It smelled like dirt mixed in with crap! She has not had anyhing to eat all day. I cant get he rto eat. I am a little worried. Is this normal for her to eat grass but, not eat her food? I would like to add that when we got her, she was not taken care of. You can see her ribs and all her other bones. I am going to be taking her to the vet on the 3rd. Any information will be helpful.
- anon39436
51
Every dog I've ever owned has enjoyed a little grass chewing on occasion. They remind me of Tom Sawyer by the river with a fishing pole and chewing on a piece of grass. People seem to do it too. Perhaps its just a lazy, peaceful thing to do.
- anon38613
50
My dog eats grass but does *not* throw up. She has just started this with the new med she is on. I am concerned because now she has trouble relieving herself.
- anon36320
49
I have three dogs - pug, sharpei, and a bulldog. When we walk them the pug and bulldog consistently will head to a spot that has long green grass and chew on the blades and eat it. They bypass other grass and vegetation. None of them has obvious stomach problems, and this happens any time of the day we walk pass this grass. I thought it might be a way of cleaning their teeth, or the flavor of that type of grass. Now I think it's similar to how people prefer a certain flavor of gum or a snack and the dogs chew on it because they like the taste. The dogs are on the same diet, but the sharpei doesn't chew grass.
- anon36259
48
My jacks love grass, just like some of us critters love salad. They don't get sick. Eating some grass is part of a natural process, for some dogs. My main comment addresses #45. When dogs usually get that white foam in their mouths and are shaking to get it out, I have seen that one and that is from sucking on a toad... no kidding, they will learn.
- anon35965
47
Last night my dog was eating grass which is what led me to this discussion. However I read the comment by Zone which everyone was seems to have upset other people. I'm frustrated because particularly concerning pH, he is correct. If you look in a college biology textbook you'll find that our blood stays within .1 pH throughout our lives. Failure to maintain the internal milleau is very quickly fatal. Geese actually change the acidity of their blood as an adaption to extremely rapid changes in altitude. Dogs however do not. And as for vitamin b17, check out the wikipedia article on it. If you check references 10, 11, and 12 there are some interesting studies in the 1980s including it's toxicity (because peach pits, like potato eyes, can release cyanide when digested). I wish that we had less tolerance for scientific ignorance around here. It would be like me proposing that my dog ate the grass because it works as a hallucinogenic. It's silly, wrong, made up, and I believe potentially harmful.

Last week I had neighbors come down and start explaining how we should harness the chemicals in lightning bugs to create electricity. They went on with several other erroneous statements about the efficiency of the bugs and the commercial applications, causing me to shake my head. Especially when we're talking about the health of my dog, whom I love very dearly, I would hope people would be a little more critical. Please don't validate stupidity, gullibility, or ignorance by invoking someone's right to an 'opinion'. The health of people and animals is far too important to be resigned to hearsay.

- anon35711
46
My dog was eating grass and vomiting until I found out about Dog-Wa. It is an herbal solution that I mix with his water, and it has had an amazing impact... no more eating grass or vomiting.
- barryhar
45
To Woodyspond..thanks for your response..before this grass and carpet munching spree I had taken her to the vet and he put her on a new food..diet food..so maybe she is lacking in something.

She has quit eating grass and carpet but still seems to have an upset stomach..she's been throwing up small amounts of white foamy stuff. I'll take her in for a checkup, but it could be the food. She tosses it around the floor which is not like her at all. Thanks again..maybe what I eat will be better..she loves veggies.

Lojo

- lojo
44
To Lojo with the Pomeranian. My Golden did the same thing and was apparently full of gas. It's unusual to see bloat or torsion in a little dog like that but I would have the dog checked out. You may need to give her Prevacid or something of that nature (I gave it to mine after bloat surgery). It's normal for dogs to eat grass but not normal when they are trying to eat anything at all in a frenzied way, like the rug fibers or pieces of twigs or leaves. The key word is frenzied, not just grazing on some grass.

My dog loves milk thistle and he always eats some as we're walking by. He also loves green peppers, lettuce!, anything green so maybe he is filling a vitamin deficiency. When I grew up, they had no "dog food" kibble and we fed them what we ate. My dog lived til she was 18 this way. Who knows if they're getting enough vitamins and minerals.

Anyway, enough said and good luck.

- Woodyspond
43
I recently got a yellow lab puppy, his name is Ricky and he's about 11 weeks old now. Adorable as can be. He was throwing up tonight about 10:40 pm, I am not sure what really caused it but he started eating grass for about a good 10 minutes. I was worried because he's this adorable lab puppy and him eating grass after vomiting just makes me worry. I want to call the vet but before I do, I need some advice from people.

- Virgo girl

- Virgogirl829
42
that's kind of weird.. i would go see a vet. my dogs have chewed on carpet, as puppies but never ate it!
- anon33586
41
My dog, a 7 year old Pom got up this morning and was frantic to get outside where she starting gobbling down grass. When she came inside she immediately started gobbling down carpet. She was ripping at the carpet and pulling out strings...frantically chewing and swallowing. I got the carpet out of her mouth and now she is back outside eating grass. She is constantly licking and swallowing like she is sick but she is not throwing up. She seems to be constipated slightly.

I started her on Interceptor Flavor Tabs two days ago, given to me by my Vet. She had these same tabs last year. She has eaten carpet before and tons of it. She had string coming out both ends.

Any idea why she does this?

- lojo
40
Just would like to say that there is a difference between having your *body* change in pH and your *stomach* change in pH. When your body changes in pH, yes, it is life threatening. When your stomach gets too acidic it's called acid reflux. That's when we reach for the tums/nexium/protonix/zantac. In our dogs cases it happens to be the grass. By the way, you can give your dog tums.

My only concern is when they eat so much grass they have diarrhea. Any thoughts on this? Should I be concerned?

Thanks, C

- anon32260
39
I've raised many dogs over the years - A Pug, Irish Setter, Black Lab, and several litters of Brittany Spaniels. *All* of them would eat grass from time to time - And I've learned that they usually do this when they have an upset stomach. I also learned that a 1/2 Tums tablet works fine. Dogs and humans have many similar dietary needs and cures. None of my dogs ever had worms. Just an upset stomach!
- anon31908
38
To Zone:

This is a discussion forum, not a scientific article. People are entitled to post their opinion. Everyone knows not to believe everything they read on the internet. Your points would be more valid with reliable sources though (a .gov or .edu site). Please state your theory, but don't attack other people.

I found the answer I needed on this forum. 1) other people's dogs eat grass and 2) it is not harmful.

So Zone, play nice.

- Sarah

- anon30432
37
My 6 year old black lab started eating grass last night. I opened the door and she stayed out for an hour eating grass. My mother thinks she may be constipated, but I read that it may be a sign of worms. She has had heartworms before, about 1 1/2 years ago. We got her treated and all has been well until now.

She recently became an inside dog. It is quite expensive to get her checked at my vet for worms. I was wondering if there were other definite signs she may be sick with heartworms again? Any replies are welcome and much appreciated.

- AmberMaria
36
Ok I guess I will throw my $.02 in here. Dogs eat grass because, well they are dogs. Some like to chew on it because that is what dogs do, they chew. Others like the taste. Some *do* eat grass to induce vomiting or to soothe their tummies.

I have been raising dogs for 40 years and have never seen a dog harmed from eating grass. One of my dogs right now poops like a horse, mostly grass. He is as healthy as can be. All of my dogs eat the best of foods and exercise 1 or 2 times every day. Knock on wood, I have never had a dog die younger than 15 and many have lived to be 20 years old.

Mostly I raise sport or herding dogs and have little experience with small dogs.

Peace out and remember, spay or neuter your pets millions of pets are put down every year.

- anon27535
35
I found this conversation by asking google why my dog eats grass. meaning to find out what was in grass that hepled him.

He is an 11 year old pomeranian and has only eaten it a few times. each time he has had a gassy stomach. he doesn't eat a lot and he doesn't get sick, but by the end of the day he is fine again. I now don't worry about it. I know he does it for his own good.

I feed him on semi moist food (because he doesn't have a lot of teeth left) and fresh veg when he wants some, he is doing *very* well and each year when he goes for his health check he always weighs in the same, never under or over weight.

I am no expert but i wouldn't worry too much about a dog eating a little grass, as long as it makes him better. anyone who is worried about it should of course take it up with their vet! Incidentally, my little fella has a favorite bush in the gardens were i walk him often that he likes to lick!! but that's just Ash :)

take care everyone

Gill

- anon26329
33
Hey Zone: you have no clue what your talking about. Every point you tried t make is WRONG.

"Vitamin B17 is beneficial in preventing and curing some forms of cancer, but it cannot be found on any store shelves. Even the fresh raw seeds like Apricot and bitter Almonds, that contain usable Vitamin B17, can not be found in health stores.

I discovered Vitamin B17 has been banned from U.S. store shelves since G. Edward Griffin wrote the book " A World Without Cancer: The Story of Vitamin B17."

- anon25612
31
After reading all the "opinions" of some and actual reasons dogs eat grass, I have come to the conclusion that "Zone" hasnt a clue as to what he is saying. trying to make it sound like he actually knows what hes talking about is bad for those who want to know about the issue.

eg.when he said he searched for B17 online and found places he could buy it,therefore its not banned. Thats his "proof" hes right!! ha ha. There are so many things banned and pulled off the shelves by the FDA its astounding. And guess what zone? you can still buy them.

The best long winded reply was, and I quote:"The body does not get too acidic and the pH of a body (canine, human, or otherwise) cannot be changed at all, let alone by ingesting something. Body pH is tightly regulated by systems within the body itself and cannot be changed by simply eating something."

According to DR ZONE the body is a machine that is highly regulated and does not alter, stop working, break down, nor change.ha ha ha PH levels are extremely important in all mammals bodies. This could be great info to know when trying to find out if our dogs are eating grass for a health reason. This information is not my "opinion" but fact. Period.

Ignorant people with a complex love the internet. Then they can finally play the part of intelligent.

- anon25609
30
My dog eats grass also. I don't have much grass around my property and he seems to only like a certain type. I would like to grow a small patch if I knew the name of it so I could buy seeds and grow for him a small patch were it would be available to him when he needs it. Anyone know the name of the grass seeds and were to buy them? Thanks and my jack russell says Thanks
- woody
29
I agree with Anon 4165 - my dogs have all been eating grass on a daily basis for years. It started with our late yellow Lab, was soon copied by our yellow Lab puppy (now 8 yrs old), and later copied by our Lab/Great Dane mix. I was thinking maybe it was a Lab thing, but we recently got a Boxer/Catahoula mix and after 6 weeks, she started copying our 8 yr old yellow Lab's behavior. The funny thing is, they each have certain grass patches they like, but aren't interested in each other's choices! I definitely think it is a learned behavior. None of our dogs have had intestinal distress with their grass-eating, though it does show up in their poop. And they are both eating high-quality kibble with a home-made wet food (barley and ground beef) added to make their food a bit tastier and moister.
- anon22192
28
I don't know about Zone's post... when a human is feeling as if they have a lots of "heart Burn" which is an excess of acid from foods that they have eaten, they eat a rolaid or tums which is alkalonic to help counter act the acid that they feel. A persons body can become to acidic a basic, there are 2 forms of each. They are metabolic acidosis/alkalosis, or respiratory acidosis/alkalosis.
- anon21469
27
Ive read all the comments on this page and yes my dog also eats grass. But I remember a while ago that my father said that dogs, cats etc; eat grass to cleanse the palate, and to take care of tummy upsets. He worked on a large dairy farm where the dogs on site would eat the hay..my dog is still a pup and I havent had any problems with her diet,

she just seams to be a picky eater. And now she eats grass. DLM

- anon20068
26
I think zonelll had every right to say what he/she said...its the truth, just because somebody believes something is true, they shouldnt be so careless as to post it in a forum read by millions who may or may not be as ignorant as the poster, if you are going to go so far as to speak like you know what the heck you are talking about you might want to go as far as to actually make sure you know what the heck you are talking about...Thanks for the educated comeback and clearing up a whole lot of b.s...kudos to you Zone...

Sincerly "One Who Would Rather Hear The Facts"

Va

- anon19757
25
my yorkie just goes into the yard and rolls and chews on the grass. No vomiting or gagging though.
- anon19409
24
I like to take my dog, Karma, on walks along a bike trail near our house. There is a stream next to the bike trail and Karma loves to swim in it. She always drinks a lot of streamwater and it worries me a bit because I'm pretty sure our streams are polluted, and once she got giardia as a puppy. Today, I took Karma on a walk and she drank streamwater as usual. We got back home and she was fine for a while but then she started doing this weird gulping/hiccuping thing and kept on bugging me. I thought she was going to throw up, so I let her outside. She ran over to the grass in our yard and started wolfing it down. She kept on eating it for about five minutes, threw up, and then I let her back inside. I think dogs eat grass when their stomach gets upset, because she looked like she really needed to throw up before she ate grass, and after she threw up, she drank some water out of her bowl and was fine.
- anon18903
23
I have 3 dogs: a German Shepherd, a Golden Retriever, and a Great Dane Mix. Each morning when I let them out to potty, they all run out and immediately eat grass and vomit. All 3 of them do it, so I'm thinking it's just a normal behavior. Early morning seems to be the only time, for whatever reason, though.
- angsmar
22
my dog eats leaves, not grass??
- anon17416
21
My dog is a 9 year old German Shephard/Rottie. At 80 kgs and very little body fat he is quite a size. Recently when I take him for a walk he has started eating grass. Not random selection but specific grasses in 3 select areas on our walk. He strolls along with me and when we reach his spot he will stop and graze for a minute and then continue on to the next select area. When he is finished we then walk home. No vomiting no gagging its just like he is having a snack on his afternoon stroll. I vary his diet throughout the week with green veggies mixed into cooked meat 3 nights a week so it cant be a shortage of green in his diet. I have no idea why he has taken a liking to grass but it does not seem to be for any other reason than he likes the stuff.
- anon17057
20
My Golden Retriever eats grass when he has a lot of gas, he goes nuts and eats everything, including leaves, twigs, anything he can get to apparently to make himself throw up or feel better. I have walked him in storms to get the gas out of him. Well, he eventually got bloated, had his stomach do a 360 degree torsion and we almost lost him but he survived. He was OK for about a year and now the gas thing is starting up again. The vet said his intestines are not moving enough. He also has bone cancer and had a leg removed and chemo. He's doing great but the walking isn't as long as it used to be so being idle is keeping his intestines from moving fast enough. He ended up back in the vet a couple of weeks ago, almost bloated, full of gas again but we got him there in time. So watch your dogs if they are really going crazy eating the grass, make sure they throw up, feel their bellies if they have been eating grass, do not throw up and they are trying to throw up with nothing coming out. If the belly is hard, it's bloated and move as fast as you can to get the dog to an operating table or he will die. I know many people who lost their dogs this way and a lot of people I spoke to, didn't even know what bloat is. It kills and kills fast. I'm not trying to scare anyone, just warning you to watch carefully. Our dog is like a kid to us and I'm sure a lot of you out there feel the same way!
- Woodyspond
19
Dogs eat grass because they are self medicating. It is a diuretic and it helps improve liver function. I have been observing this behaviour for a while and they know exactly what type of grass to eat. This is probably what informed humans to the value of herbology. We don't have it hard coded like the animals do. :) Eric
- anon15419
18
I appreciate everyone's different opinions and find ZoneIII's comments a little offensive. Although I would like to only be reading facts posted on here, perhaps some people honestly think something is true, and from reading other people's comments will learn what the actual facts are. I have a dog that eats grass as a lot of people do and after reading all the posts, I don't necessarily think any are true fact. I think they're helpful, and from here I will do my own research and speak with my vet. I think using the attacking approach is really necessary when we're all just talking about possibilities why our dogs are eating grass.
- anon14693
17
Note: There is a HUGE difference between something not being approved as a treatment for a disease and a ban on the substance! Let's stick to facts and make statements as facts when they aren't facts by any stretch of the imagination.

- ZoneIII
16
One other point. As mentioned, someone here claims that vitamin B17 "is known to prevent cancer" but that the government banned it. How can you ban a vitamin? Just do an internet search for vitamin B17 and you will find endless places to by this "banned" vitamin. Vitamins are not drugs and they are not regulated by the FDA. It amazes me how people make statements with absolutely no basis in facts.
- ZoneIII
15
I would like to comment on a response here that claims that the reason dogs eat grass is "quite simple" and that they do so when their bodies become "overly acidic" because chlorophyll is alkaline. This claim is pure nonsense! The body does not get too acidic and the pH of a body (canine, human, or otherwise) cannot be changed at all, let alone by ingesting something. Body pH is tightly regulated by systems within the body itself and cannot be changed by simply eating something. If it could be changed by simply ingesting something, the animal (or person) would die almost immediately. This should be obvious to anyone with even fundamental critical thinking skills. Furthermore, chlorophyll is not alkaline; it's almost perfectly neutral in pH. In addition, the digestive system is so acidic (and needs to be to function properly) that grass or anything else eaten cannot change it. A dog can digest bones, teeth, claws, and fur with no problem. My dog swallows whole squirrels head first. A few blades of grass will not and cannot reduce the extremely powerful and necessary acids in a dog's digestive system one iota, let alone its body tissues. pH is tightly regulated by systems within the body, not by what one eats. Tissue pH remains almost precisely the same throughout the life of an animal. The nonsensical idea that by eating alkaline substances one can regulate the pH of their body appears to have come from a scam perpetrated by the ex-convict and scam artist, Kevin Trudeau, when he claimed that a special (expensive!) coral calcium would make the body become less acidic and that would prevent cancer. The idea has absolutely no basis in science and it appears that Trudeau just pulled it out of thin air like he has done with many of his other fraudulent claims in the past. Also, the chemical makeup of the expensive coral calcium that he sold is totally indistinguishable from Tums tablets! It is chemically identical. Trudeau was ordered to stop making such claims and he can no longer sell any products at all except books and that is only because the 1st Amendment protects that right. I actually knew a woman of sadly low intelligence who believed Trudeau's claims and took coral calcium thinking that she would then never get cancer. She fell for other Trudeau scams as well. She has since died of cancer. After being busted many times and spending time in prison for credit card fraud, posing as a doctor to secure a bank loan, etc., Trudeau's strategy became one of claiming that the drug companies are in a conspiracy with the government to keep us all sick and that he's a hero out to protect us! This is a tactic that has been used by many scam artists and there are those that are so ignorant and so gullible that they actually believe such nonsense. In fact, another comment here claiming that vitamin B17 is "known to prevent cancer" but was "banned by the government" sounds like it came right out of a Trudeau book. It appears that the person who said here that eating grass lowers the pH of a dog's body has fallen victim to one of Kevin Trudeau's many scams. I never cease to be amazed at what people will believe these days. I encourage anyone who is interested to do their own research on this subject but NOT at websites that sell products.
- ZoneIII
14
my beagle eats grass on occasion, but she's not too bad for it. Tonight she got sick in her kennel a little bit. When I let her out she seemed very bothered and wanted desperately to go outside. I took her out and immediately she headed for a patch of grass to gobble down. I took her back in. She then started acting very anxious and gulping. It was almost like she couldn't breathe right, just gulping. I also noticed her tongue wasn't as pink as it usually is. She finally convinced me to let her out again. Well she ate at least a quarter pounder in grass, Then she emptied the entire contents of her belly. She quit gulping for air. and her tongue was back to pink. I'm guessing she may have been choking on something.. But the grass did the trick and she knew it would. She just had to keep bugging me to let her do it.. i was kinda getting concerned because she never acts like that about going out, even when she has to go bad. I've learned something from this..
- rebelyell
13
My boxer dog has just started eating grass, sometimes throwing up sometimes not. I was told it was because he had worms!
- anon13781
12
My dog eats grass, sometimes like crazy, and then vomits. I watch him and after he eats the grass he just stands still, as if waiting. Then, usually, in about 2-3 minutes he starts to vomit. I look at it and its just grass and some saliva/stomach 'juice'.

I worry that it is a sign of some underlying problem. Does anyone have any suggestions?? Any help would be greatly appreciated.

- atrimpper
11
My new puppy eats grass constantly, she prefers dry grass or roots. It doesn't seem to upset her stomach and I don't think it is a dietary imbalance as I feed her an excellent dog food recommended by my vet. I appreciate the comments about pesticides, that is a great point. Fortunately, we don't use any... haven't for years!
- anon12956
10
i'm glad everyone else's dogs are doing the same thing. mines not just crazy.
- anon12600
9
My dog eats grass when she is constipated. When a few days go by and i notice her straining to have a bowel movement, i know that shortly she will eat grass. She does not throw up (knock on wood), but after eating the grass, she appears to feel better and will then eat her food. She will not eat if she is showing signs of constipation and will only eat after eating the grass and having a normal bowel movement, which happens shortly after she eats the grass and walks around a bit.
- anon11313
8
My dog has eaten grass almost daily, and not to throw up... it's usually in her stool. However, I am feeding her a good food, and every so often some fruit/veggies as treats. I am thinking for her it's more of a comfort/stress relief/habit versus a lack in her diet. Since we've only had her for 2 months (animal shelter dog), I'm still on the fence as to her grass eating. Thanks to all and your inputs. I know I'm not alone with a lawn mower! :-)
- anon10899
7
The reason dogs chew on grass is simple. When their bodies become overly acidic, the chlorophyll in the grass (which is alkaline) neutralizes it and restores the body's pH balance. If the dog should choose to swallow it, he/she will vomit it back up because the fibers in grass are not digestible to dogs (and humans). They don't actually want to throw up so much as they want to get to the chlorophyll.
- anon9028
6
I have read that grasses are a rich source of B17 - which a dog's stomachs can tolerate well. B17 is known to prevent cancer, but was outlawed by the FDA. But animals are different to humans. If you take note, most dogs will sniff grasses, and only eat particular varieties - this is because they know which ones are the ones rich in B17. I'd really like a study done, conducting research to discover a conclusive answer as to why they eat grass.
- anon5605
5
My dogs eat grass all of the time, actually every day. It started with my oldest dog and every dog that followed learned the behavior from her. I have had dogs before that almost never ate grass so I really contribute my current packs behavior to emulating the top dog. They learned to love grass munching. It has never caused them to vomit, it has never affected their stool, the vet says that they are in perfect health and I feed them a natural, well balanced diet. Maybe they just like the taste of grass. But it is obviously not hurting them so I don't have any intentions of trying to stop them.
- anon4165
4
My Golden Retriever seems to have a similar behavior. He will start swallowing and licking his lips becoming agitated and gets insistent on going outside. Once in the yard he will gobble grass very quickly, although he seems to sniff for certain types of grass as he moves along the ground. He continues eating for several minutes and he doesn't appear to chew the grass much. After going inside he seems calmer and on a few occasions he will throw up the grass several hours later. Feeding him some lettuce also seems to help when this behavior arises. I have wondered if it could be due to hairballs upsetting his stomach.
- anon4156
3
My dog has two instances of jumping off the bed to come beg for snacks. Each time, she immediately shows signs of some disturbance: She chomps at nothing, she tries to eat the carpet, she seems to have something stuck, but she won't let me check. I put her out, she grazes intensely for a period of time, then she settles down and gets back to normal. It seems to have something to do with the physical jumping and something getting stuck in her throat.
- anon3666
1
When volunteering at two Humane Societies as a dog walker, I have noticed at times that all the dogs I take out are eating grass. Since Humane Societies depend on donated food, I often wonder what they are eating that doesn't agree with any of them.

My own dog just started eating grass along roadways. I have been changing her food to a reduced calorie food (same brand) and wonder if there isn't something missing in the new food causing her to want to eat grass.

- anon699

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Written by Tricia Ellis-Christensen
Last Modified: 26 October 2009

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