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 ...

That isn’t usually supposed to happen.

DENTON, Mont. -- An animal previously believed to be a wolf-dog hybrid is actually just a wolf, a DNA test revealed. "The lab compared the animal's DNA with thousands of other DNA samples from wolves, ...

Genetic testing revealed that the two-year-old animal, surrendered to the B.C. SPCA early this year, was 35.4 per cent gray wolf.

The gray wolf, also called the timber wolf, is the largest member of the canine family with fur ranging from gray to brown, black or white. Smithsonian's National Zoo and Conservation Biology ...