The Labrador retriever has reigned supreme as the most popular dog in the United States for 31 years, according to the American Kennel Club, which describes the breed as friendly, active and outgoing.

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 ...

From the excitable sheep dog to the aloof Shiba Inu, and all breeds in between, dogs have unique and diverse behavioral traits. By analyzing DNA samples from over 200 dog breeds along with nearly ...

Most pet dogs carry small fragments of wolf DNA, left behind after their long association with people. That genetic trace is ...