Here are a few videos on animals laughing or being funny.
Monkeys and Gorillas:
Animals and humans:
Do Animals laugh:
Hyena laughing:
Dolphin laughing:
Zebra laughing:
Funny Dog videos:
Dog and a Lion:
Milo (Dashound) and Bonedigger (Lion) were friends:
Animal friendships
Animals play
Bonobo monkey’s live in playful societies
Jane Goodall discusses Chimpanzees and Human Development