Much like Spider-Man, a gray tree frog (Hyla versicolor) can walk upside down on a smooth tree branch. This is thanks to its large, round toe pads that are equipped with special skin and mucous allowing the animal to cling tight to trees and branches.
Gray tree frogs are very small, ranging in size from 1.25 to 2 inches in length. Their name, however, is deceptive, because they can change color to match of their surroundings.
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