Geckos climb walls with sticky hairs on their toes known as seta. The hairs on the small lizards’ toes have a mechanism that can turn the stickiness factor on and off at will, which allows geckos to first grip and then quickly scale walls. Geckos use their seta as a means of hiding and running away from predators. They can travel at approximately 20 body-lengths every second by scaling surfaces. In addition to giving geckos speed, their toes’ adhesive system is strong—it is estimated that when geckos hang upside down, their seta would be able to support 50 times their weight.
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