U.S. scientists analyzed the DNA of numerous modern-day dog breeds, and found that two-thirds of pet dogs have traceable wolf ...

Wolf DNA seems to have influenced the size, smelling power and even personality of modern dog breeds, scientists said.

Like most breeds, their exact heritage is hazy, but Chihuahuas are likely to have been established in Mexico centuries ago, where their ancestors were deemed to have sacred powers in Aztec and Toltec ...

Among dogs without a history of purposeful crossbreeding, samples from two Grand Anglo-Francais Tricolore hounds led the way, ...

Some massive breeds such as the St. Bernard completely lack wolf DNA, but the tiny Chihuahua retains detectable wolf ancestry ...

New studies of canine genetics shed light on the diversity of dogs and our longstanding, still-evolving relationship to them.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images If you are on the lookout for a small, affectionate canine companion, you ...

There's a new top dog in town: The chihuahua is Washington's most popular dog breed, according to U.S. News & World Report. The chihuahua — which makes up 4% of dogs in the country — is also the most ...

If you are on the lookout for a small, affectionate canine companion, you may be debating the options of a Chihuahua vs. Pomeranian. Both are incredibly popular toy breeds, known for their big ...