Lower Levels
When a Mudkip hatches, it knows two moves: Tackle and Growl. As it engages in fights and gains experience, it can learn new moves. At level six, it can learn Mud Slap. At level ten, it learns Water Gun. Level 15 brings Bide, and level 19 leads to Foresight. While it would be nice for the Mudkip to be able to learn all the moves, it is limited to knowing only four at a time. In general, the higher level the move is, the more damage it will inflict on an opponent. Bide is the exception here; it makes the Pokemon idle for two turns and then inflicts double the damage that the Pokemon suffered over the two idle rounds.
Level 20 to 30
When a Mudkip reaches level 24, it can learn Mud Sport. This defensive move reduces all electrical attacks by 50 percent for the duration of combat. At level 28, the Mudkip can learn Take Down. This is a very strong move that hits 85 percent of the time, but it comes with a drawback: it causes collateral damage of 25 percent to the Mudkip.
Level 30 to 40
As the Mudkip advances, it can learn Whirlpool at level 33 and Protect at level 37. Whirlpool used to be a specialty move due to the amount of damage it can inflict, and it is a good attack move for an advanced Mudkip. Protect, on the other hand, does just that: it protects the Pokemon from any damage that it would otherwise receive from attacks during the round in which it is used. It decays at a rate of 50 percent with each successive turn.
Level 40 to 50
The highest level moves that a Mudkip can learn are the level 42 Hydro Pump and level 46 Endeavor. Hydro Pump is what its name suggests: a huge, high-pressure water attack that inflicts a massive amount of damage ̵2; up to 120 points. Endeavor is an interesting move that is meant to be used against opponents that have significantly higher hit points than the Mudkip. It brings the opponent's hit points to the same number as the Mudkip's, creating a more even match.