If you ever encounter one in the wild, and you are in an early stage in the game, run the opposite direction. Also try not to agrovate it unless you are up to the KO/Fight.
Good luck if you encounter it!
If your going to challenge something high level, whether for taming or killing, make sure you have a large rock or cliff to perch on, otherwise you'll have to have a powerful melee weapon like a sword. If you engage into battle, always have a backup plan to escape, whether it be a fast mount or a raft. Never fight something high level if your not confident your tame or you can handle said situation.