This is an interesting article from Life on the Line Rescue . It discusses the myth that dogs can’t laugh or smile and instead states that dogs will often display characteristics of happiness and joy. Most dog owners will agree that they have seen their dogs smile and laugh or even noticed a cheeky glimmer in their dog’s eyes. I know that my dogs often seem to display feelings of joy but usually at my expense!
Animals make laugh-like sounds when they are tickled or playing
For many years psychologists and behavioural biologists agreed that laughter was a unique emotional expression found only in humans. However, as the study of animal emotions expanded this idea was called into question.
The Nobel Prize winning ethnologist, Konrad Lorenz suggested that dogs are capable of laughing. He says that it is during play that dogs actually appear to laugh. In his book Man Meets Dog, Lorenz describes it this way:
“…an invitation to play always follows; here the slightly opened jaws which reveal the tongue, and the tilted angle of the mouth which stretches almost from ear to ear give a still stronger impression of laughing.
This ‘laughing’ is most often seen in dogs playing with an adored master and which become so excited that they soon start panting”.