The Secret of Gecko's Sticky Feet (IMAGE)
Caption
Geckos' feet are nonsticky by default, but they can activate "stickiness" through application of a small shear force.
Credit
Image by Bjørn Christian Tørrissen, Creative Commons License: <a target="_blank"href="http://creativecommons.org/licenses/by-sa/3.0/">http://creativecommons.org/licenses/by-sa/3.0/</a>
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This image may be used only with appropriate credit. <a target="_blank"href="http://creativecommons.org/licenses/by-sa/3.0/">http://creativecommons.org/licenses/by-sa/3.0/</a>
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