So far, no example of animal laughter comparable to that of humans has been documented. However, researchers have reported that under certain conditions some species emit special vocalizations that could be considered akin to laughter. In one specific case, a researcher has been able to identify a huffing sound unique to dogs at play. Scientists studying the behavior of nonhuman primates and rats have also reported similar observations.
Do animals have emotions? Many pet owners will swear that when their dogs play they are smiling and experiencing joy. Researchers believe that the “huffing” sound dogs make when playing is a canine version of laughter.