Alvin and the Chipmunks (1983)

S1E20 Swiss Family Chipmunks

Dave insists on taking the Chipmunks on a camping adventure, much to their dismay. Once they reach the campsite, the Chipmunks stumble upon enormous footprints and become convinced that Bigfoot is tracking them. While attempting to create a treehouse for Dave, he accidentally falls and sustains a serious injury. Concerned for their friend, Alvin and Simon set off on a quest to find Bigfoot, hoping to uncover the truth behind their fears.