Dogs have pet facial expressions to use on humans, study finds

Showing tongues and puppy eyes, and facial movement in general, was more likely when scientists faced the animals, suggesting conscious communication

Dogs really do turn on the puppy eyes when humans look at them, according to researchers studying canine facial expressions.

Scientists have discovered that dogs produce more facial movements when a human is paying attention to them - including raising their eyebrows, making their eyes appear bigger - than when they are being ignored or presented with a tasty morsel.