Snook is a pale-throated three-toed sloth, Snook helps his friends learn all about the 'Big Big World' around them. He's slow-moving (but smart) and often takes naps, but is always up for a scientific investigation. He also enjoys singing and dancing with all of his friends in the World Tree. In addition to interacting with the other characters, Snook regularly takes the time to break the fourth wall, often to explain a fact or ask a question. Like Big Bird or Bear from Bear in the Big Blue House, Snook is a full-bodied character, the only one not requiring 3 performers.