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 ...

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 US scientists, who were surprised to find ...

Most pet dogs carry small fragments of wolf DNA, left behind after their long association with people. That genetic trace is usually silent, but new research suggests it may have helped shape how dogs ...