"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." While dogs and cats are genetically unrelated, breeding for certain features is making some dog and cat ...

What do Persian cats, Pekingese dogs and pugs have in common? They all share a dramatically distorted skull, with a flat, round face and a nose pushed up between their eyes. This unnatural morphology ...

Domesticated dogs may have a third-wave evolution to become better human companions. A generation or two ago, dogs were ...

A surprising diversity of dog shapes and sizes evolved long before the Victorians began making modern breeds Modern dog breeds come in a mind-boggling array of shapes and sizes—from Chihuahua to Great ...