Add Yahoo as a preferred source to see more of our stories on Google. Chihuahuas have about 0.2 percent wolf ancestry, according to a new study. While that chihuahua might seem about as similar to a ...

There are a lot of small dogs in the world, but not all small dogs give off the main-character energy that makes them feel almost larger than life. Chihuahuas are really good at pretending they're the ...

Those tiny, fluffy dogs walking down the street may look cute but beware — they probably have some wolf in them. That is the discovery announced on Monday by U.S. scientists, who were surprised to ...

Here’s what you’ll learn when you read this story: There are wolves that look like dogs, and dogs that appear suspiciously like wolves. For most, this is just a symptom of the fact that dogs are ...

New research led by scientists at the American Museum of Natural History and the Smithsonian's National Museum of Natural History reveals that the majority of dogs living today have low but detectable ...

Add Yahoo as a preferred source to see more of our stories on Google. Modern wolves and dogs both descend from an ancient wolf population that lived alongside woolly mammoths and cave bears. Iza Lyson ...

A major genetic study has found that nearly two-thirds of modern dog breeds carry measurable wolf DNA, pointing to ...

A new study from the American Museum of Natural History and the Smithsonian’s National Museum of Natural History, showed that most modern dogs carry small but detectable traces of post-domestication ...