Latest Pokemon GO information about Larvitar Rock and Ground pokemon. Pokemon Go Generation 2: Rock Type Pokemon are countered by Water Type. For Example, Corsola (Water type) will deal increased damage to Larvitar when using any Water Moves against him in Gym Battles.

Additionaly, since this Pokemon is also a Ground Type.

It will suffer increased damage from Water Type Pokemon, such as Corsola or if damaged by any Water Type Moves.

However, it will also take decreased damage when attacked by Fire, Ice, Flying, Bug, Electric, Poison, Rock and Steel moves.