US Patent 7703418 Animal training device

An animal training device for use with a head collar, a neck collar and a leash simultaneously includes: an elastic body removably coupled between the neck collar and the leash, the elastic body lengthening in response a separating force between the neck collar and the leash and an inelastic line removably coupled between a snout portion of the head collar and the leash, the inelastic line having a fixed length. When the animal pulls against the leash, the inelastic line exerts a force on the snout portion of the head collar.