Headbutt

Headbutt is a Normal-type move introduced in Generation 1.

Values by generation

From PokeAPI's change history. Up to Generation 3, physical or special depends on the type. Highlighted cells changed from the previous generation.

Generation	Type	Category	Power	Accuracy	PP	Priority
Generation 1	Normal	Physical	70	100	15	+0
Generation 2	Normal	Physical	70	100	15	+0
Generation 3	Normal	Physical	70	100	15	+0
Generation 4	Normal	Physical	70	100	15	+0
Generation 5	Normal	Physical	70	100	15	+0
Generation 6	Normal	Physical	70	100	15	+0
Generation 7	Normal	Physical	70	100	15	+0
Generation 8	Normal	Physical	70	100	15	+0
Generation 9	Normal	Physical	70	100	15	+0

Gold / Silver · Crystal	An attack that may make foe flinch.
Ruby / Sapphire · Emerald	A ramming attack that may cause flinching.
FireRed / LeafGreen	The user sticks its head out and rams. It may make the foe flinch.
Diamond / Pearl · Platinum	The user sticks its head out and rams straight forward. It may make the foe flinch.
HeartGold / SoulSilver	The user attacks with its head. It may make the foe flinch. To find Pokémon, hit trees.
Black / White · Black 2 / White 2	The user sticks out its head and attacks by charging straight into the target. It may also make the target flinch.
X / Y · Omega Ruby / Alpha Sapphire · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield · Legends: Arceus · Scarlet / Violet	The user sticks out its head and attacks by charging straight into the target. This may also make the target flinch.

Gold / Silver · Crystal	TM02
Let’s Go, Pikachu! / Let’s Go, Eevee! · Legends: Z-A	TM01

All versions combined; see each Pokémon's page for game-by-game details.

Sources : PokeAPI (moves, move_changelog, move_flavor_text, pokemon_moves, machines)