Quagsire

Gold: This carefree Pokémon has an easy-going nature. While swimming, it always bumps into boat hulls.
Silver: Due to its relaxed and carefree attitude, it often bumps its head on boulders and boat hulls as it swims.

Crystal:

TYPE: Water/Ground
HEIGHT: 4' 07"
WEIGHT: 165 lbs
EVOLUTION: Quagsire