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 -- ...

Lizards come in all shapes and sizes, most of them of the smaller nature. What Joycelyn Penson encountered while visiting her son's home in Orland was not small. Penson spotted (and nabbed video of) a ...

Creeping through the mangroves of Papua New Guinea, a clawed creature evaded detection. At least, it tried to and largely succeeded — until a scientist arrived on the island in the southwestern ...

Scientists found a “large” creature with “sharp” claws in a desert of Australia and discovered a new species, a study said. Photo from Jules Farquhar via the Biodiversity Council In a rocky desert of ...

"He's a big fella, and he's scary," homeowner Zachary Lieberman told "GMA." A 6-foot-long lizard has been terrorizing a Florida family for weeks after taking up residence in their backyard. "He's a ...

Scientists found a “dragon”-like animal with claws and a colorful throat in a forest of Kerala and discovered a new species, a study said. Photo from Sandeep Das via Das, Pal, Narayanan, Subin, Palot, ...