Ever heard of a liger? Or how about a zonkey? If you're unfamiliar, crossbreeding is the strengthening of the species genes of one animal by breeding with a stronger mate of another animal. Sometimes ...

The bear scientists shot in the Canadian arctic in 2016 was a biological mystery. It looked like a grizzly bear, complete with long claws and a prominent snout, but most of its fur was white. Call it ...

A new study finds a link between chemicals and bone loss that could damage males' penises, potentially harming reproduction.