Mammalian hair has a surprising evolutionary origin, according to a study published in __PNAS__ this week: the reptilian claw. Evolutionary biologists have long conjectured about the origin of hair -- ...

Three near-identical U.S. lizards have kept their identities for millions of years in a way that researchers compare to the ...

Some of the greatest ideas are spawned during the coldest of times. Food preservation, hospital inoculations and cuddling can all be attributed to the inspiration of low temperatures. And so it is ...

If you live in California, you’ve probably seen, or held, a western fence lizard. According to a leading dataset of animal and plant observations, the species is the most commonly spotted reptile in ...