We are hardwired to find cats' faces cute. We know…you're probably thinking that the cuteness is self-evident — even if you're not a "cat person" it's hard to deny the appeal of a fuzzy kitten.

Big cats – like lions, tigers and pumas – are the attention-grabbing celebrities of the feline world. But of the 41 species of wild felines, the vast majority are about the size of a housecat.