Humans began selectively breeding dogs around 2,000 years ago, and these genes play a role in your pup's behavior, a new study of 4,000 purebred, mixed-breed and wild dogs finds. When you purchase ...

Many dog breeds are purely about appearance—think poodles and the Pekingese. But plenty of other breeds, like racing greyhounds, are devoted to specific tasks. For many of these tasks, physical ...

The largest-ever study of dog behavior, tracking more than 47,000 pets, reveals how breed, size, sex, and age shape canine traits. It provides insights that could help identify early signs of illness ...