For a long time, it was believed that the first domestic dogs all resembled today's wolves. However, studies suggest this is not necessarily the case. Photo: Getty Images / Roman Bjuty How much ...

Modern dog breeds come in a mind-boggling array of shapes and sizes—from Chihuahua to Great Dane, corgi to greyhound, pug to German shepherd. In fact, the domestic dog, Canis familiaris, shows more ...

have shown that dogs have been human partners for about 33,000 years, and it has also become clear that humans have genes that make it easier to feed dogs. Julian Kaminski, a behavioral psychologist ...