Bouffalant

Bouffalant is another token regional Pokemon, but why on earth is it centered around New York? It likely has to do with the fact that the champion of Generation 5/Unova, Alder, used a Bouffalant, and Unova is largely based on the north-eastern United States... with very strange geographical biomes all scrunched into one little area. Even so, wouldn't it make more  sense to put a bison in the U.S. southwest....?

Best PvE Offensive Moveset

• Bouffalant doesn't have a full STAB moveset, and even if it did it would be Normal Type. So Mud Shot and Earthquake are probably best, as they can at least have matching types.

• Zen Headbutt and Megahorn are basically worthless.

• Skull Bash and Stomp at least have STAB. The former is stronger, and the latter is more reliable.

Best PvE Defensive Moveset

• Zen Headbutt has higher power and the ability to fend off Bouffalant's Fighting Type counters. Mud Shot is far too weak on defense to be worth using.
• Stomp has STAB and is Bouffalant's cheapest charged move
• Earthquake, Megahorn, and Skull Bash will likely not be used on defense, and are basically certain to not get a second use.

Mud Shot sports very fast energy generation and poor damage output, while Zen Headbutt is just bad period. 

Stomp costs the least amount of energy, benefits from STAB, and can be used frequently, though it can't be Super Effective. Earthquake and Megahorn are both powerful and efficient moves, each with different coverage depending on what the player needs. Skull Bash provides STAB neutral coverage, and a guaranteed buff to Bouffalant's DEF stage, but also costs the most amount of energy to use.