The humps on Camerupt’s back are formed by a transformation of its bones. They sometimes blast out molten magma. This Pokémon apparently erupts often when it is enraged.
– Pokémon Alpha Sapphire Pokédex
It has a stubborn, individualistic disposition. Eating dirt, making mud, and playing in the mire all form part of its daily routine.
– Pokémon Moon Pokédex
Its sharp fangs make short work of finishing off its enemies, but it’s unable to maintain this body indefinitely. After a period of time, it falls apart.
– Pokémon Sun Pokédex
Its head sports an altered form of whiskers made of metal. When in communication with its comrades, its whiskers wobble to and fro.
– Pokemon Sun Pokédex