You can tell how it’s feeling by the smoke spouting from its shell. Tremendous velocity is a sign of good health.
TORKOAL digs through mountains in search of coal. If it finds some, it fills hollow spaces on its shell with the coal and burns it. If it is attacked, this POKéMON spouts thick black smoke to beat a retreat.
TORKOAL generates energy by burning coal. It grows weaker as the fire dies down. When it is preparing for battle, this POKéMON burns more coal.
It battles using energy it gets from burning coal. When loosing smoke from its nostrils, it lets off a sound that is similar to a locomotive’s horn.
It burns coal inside its shell. If it is attacked, it belches thick, black smoke and flees.
— Pokédex entries (via PokeAPI)