Good Night, Gorilla

'Good night, Gorilla', says the night watchman as he finishes his rounds at the zoo. But Gorilla has other ideas, deftly pick-pocketing the watchman's keys and letting himself, Elephant, Lion, Hyena, Giraffe and Armadillo out of his cage. The watchman makes his way home and into bed, unaware that the zoo has followed him home!