Some frogs have evolved features so strange that scientists struggle to explain them, and a few look less like amphibians ...

This newly discovered poison frog may represent an evolutionary step on the pathway towards developing brilliant warning coloration associated with other poison dart frogs. A small reddish-brown frog ...

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Some harlequin frogs have lost their poison—and their ability to defend themselves. Scientists are on the case.

For frogs, love is noisy. Each spring, swamps, marshes and ponds across the United States become the amphibian equivalent of raucous singles bars as a host of damp-skinned hopefuls from many species ...

What if you had the power of invisibility, but it only works when you’re asleep? That might be useful for a surreptitious nap in public, but it still probably wouldn’t suit you as well as it does the ...