The Mer-Mutt: A wolf Style.

The Mer-Mutt is a style of mob already in the game. It has a 1% chance to replace all mob spawns in oceanic biomes, stone shores, beaches, desert lakes and rivers. They have infinite underwater breathing time and grant the player doubled underwater breathing time in cold, lukewarm and warm oceans. They frighten drowned mobs and can be tamed with raw cod. They have double the health of a normal wolf and the same attack damage. They do not lose there oceanic style once out of water.