Boy is a recurring character in The Backyardigans.
Boy is Caveman Austin's pet dinosaur. Austin purchased him from Pet Store Lady Uniqua's "Pet-a-Store-us" shop. Boy is playful and enjoys visiting the Rockville park. His energetic nature often causes trouble for his owner.
Boy is mostly a gray-white color. He has several brown spots. His feet are brown with three toes on each one. Boy normally wears a brown collar.
Boy has appeared in two episodes of The Backyardigans: "Caveman's Best Friend" from season three and "The Action Elves Save Christmas Eve" from season four. In the latter episode, he is seen as a toy in Santa's workshop.