Most gorillas walk on all fours leaning on their knuckles but one gorilla called Ambam is doing things his own way.
He wanders around on his hind legs, just like a human. He became a YouTube star a few years back for his walk.
This week, he celebrated his 25th birthday and keepers at the animal sanctuary in Kent, where he lives, gave him a tasty cake to tuck into.
Happy birthday Ambam!