Wolfins have sleek, torpedo shaped bodies covered with a fine brown and grey fur. They are carnivores, with rows of sharp teeth, and a long tongue, over which they have a lot of control. They use their tongue to aid them in getting at certain tricky types of food, such as the shelled Inku. Wolfins also have an incredibly powerful sense of smell. They have big nostrils which they use for this purpose. They evolved from land dwelling mammals, which of course breathed air, but they have re-evolved gills, so they can breathe in the water. However, after swimming hectically for an extended period, they may become exhausted and need to go up to the surface for a gulp of air.
Wolfins have been known to attack swimmers.