video: The short, lop-sided smiles of baby Japanese macaques. When human and chimpanzee infants are dozing, they sometimes show facial movements that resemble smiles. These facial expressions -- ...

This one is sure to put a smile on your face -- a team of Japanese researchers found that sleeping baby monkeys could shed light on the origins of laughter and smiles in humans. When either a chimp or ...

Images of a seal smiling and a monkey dancing are in the running to be named the funniest wildlife photo of the year. The pictures are among 42 on the shortlist for this year’s Comedy Wildlife ...