For years, scientists have thought that the irresistible, wide-eyed expression known as “puppy dog eyes” was something only ...

Researchers have discovered that coyotes possess the same facial muscle responsible for the irresistible "puppy dog eyes" expression seen in our beloved pet dogs.

Discovery suggests that the famous expression might not only be for communication between pooches and their owners.

The ability to make heart-melting stares may not be the fruit of dog domestication if their still-wild cousins have the power to do it too.