Cats playing with each other make lots of noises and pull faces too. Photo: 123rf
Laughter is one of the joys of life and it helps us connect, which may be why we play peekaboo and tickle games with babies. Whether animals share our sense of joy has been a hot topic in research.
Chimpanzees and orangutan laugh when playing together and both species play tickle games, with older animals tickling the young, and infant apes tickling each other when roughhousing.
