Thus some parts of a frog's toe pad are in direct and dry contact with whatever they are standing on.
ECONOMIST: How tree frogs keep their grip
Dr Federle and his colleagues argue that the complex arrangement of pegs and channels around the hexagonal cells has evolved to drain the mucus rapidly away from the toe pads, allowing the tree frog to grip.
First, the team measured the thickness of the fluid layer between the toe pad and the Petri dish that the frog was standing on.
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