Bart Simpson’s prank calls to Moe were actually based on real calls two guys did to bar owner and heavyweight boxer Louis “Red” Deutsch. The calls have been recorded.

Wolves are legendary because of their spine-tingling howl, which they use to communicate. A lone wolf howls to attract the attention of his pack, while communal howls may send territorial messages from one pack to another. Some howls are confrontational. Calls may be answered by rival packs. Much like barking domestic dogs, wolves may simply begin howling because a nearby wolf has already begun.