If the fire burning within its shell goes out, it will die. Those who wish to raise one in their home must always keep something flammable at hand. 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. It burns coal inside its shell for energy. It blows out black soot if it is endangered.
Pokédex entry #324
Torkoal is a type fire Pokémon that doesn't evolve
Torkoal in Pokémon GO
It's possible to hatch Torkoal from an egg?
No, Torkoal can't be hatched.
Which are Torkoal’s strengths and weaknesses?
Torkoal is a fire type Pokémon. fire type pokémons are strong against grass, ice, bug, steel, fairy pokémons but weak against fire, water, rock, dragon pokémons.