Azurill's ball tail appears to be the biggest of its evolution family; this is due to Azurill's body itself being small. It is large and bouncy, and packed full of the nutrients this Pokémon needs to grow. Azurill can be seen bouncing and playing on its big, rubbery tail. The tail is a flotation device in water. It is the only one of its evolutions with white to the side of its cheeks (similar to Pikachu), not under its chest. It also has no arms; however, this does not affect its mobility.