Chain Chomps are common enemies. Chain Chomps bear a resemblance to a ball and chain and are typified by their large, tooth-filled maws and incessant biting. Chain Chomps also possess canine qualities, such as barking, and are commonly used as guard dogs throughout the Mario series. Many Chomps have been part of the Koopa Troop, though a couple of them have been shown to be independent. Despite their English name, not all Chain Chomps have chains, or even chomp; many later depictions of chainless Chain Chomps have them rolling around like boulders.