Help!... It's the Hair Bear Bunch! (1971)

S1E2 Rare Bear Bungle

Title: The Mysterious Bear Plot: The Hair Bear Bunch welcomes a new housemate, Rare Bear. However, Hair Bear grows suspicious that Rare Bear may have been sent by Mr. Peevly to secretly monitor their activities inside the cave. As tensions rise, Hair Bear must figure out whether Rare Bear is a friend or an undercover adversary.