If you see one, run as fast as you can. They are only seen if a player has summoned them, as they are the final and by far strongest boss in the game. Only 2 people in the world have actually beat them, so be on your guard.
Went on a small killing spree killing Dodos with my fists I hit one and believe it or not he put up a fight and bit me. Up like so dododex can make more courageous dodos that don’t realise they will die.