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They can, and do. So do toads.

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Frogs actually don't walk -- they jump. I think the person is asking why they can only jump, not walk. That is because of the shape of their back legs and the design of the "knee" joint. Frog legs, kangaroo legs, cat legs, rabbit legs -- they all have similar back legs for jumping which work almost like a spring. Great for jumping, but not for walking. Cats have four legs, so they can walk as well as jump (which makes them great at climbing trees, but not so great at getting back down). Somebody who knows more about Biology can probably explain this better.

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∙ 17y ago
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