Watch out if Dodrio's three heads are looking in three separatedirections. It's a sure sign that it is on its guard. Don't go nearthis Pokémon if it's being wary—it may decide to peck you.
Apparently, the heads aren't the only parts of the body thatDodrio has three of. It has three sets of hearts and lungs aswell, so it is capable of running long distances without rest.