Black cats have long intrigued us, from comic book heroes to symbols of superstition. They’re also more common that you might think: At least 14 of the 35-plus species of wildcat—including jaguars, ...

A rare all-black gentoo penguin has been spotted on Rongé Island, Antarctica. Gentoos typically sport the more traditional tuxedo penguin pattern, but in cases of leucism and melanism, they can get a ...