Giant Multi-Headed Dog

One of Pain's many summonings used to battle his former teacher, Jiraiya. It had the same Rinnega-like eyes like Pain implying his control over it. Pein's giant dog has the ability to split into more dogs each time it attacked. These dogs can then merge and split apart at will. The more the dogs grew,split, and merged, the stronger it would get. It was used to battle Jiraya's giant toad summon, Gamaken. It was strong enough to send Gamaken flying.