I would love for Turbine to add more mob types and AI to their bucket list for this game.
Lore-masters have a pet snake, and there's a few 1 morale snakes around, but nothing terribly large in the game.
I think the worms in Moria and Mirkwood are probably the closest thing to a large snake in the game.
LvL 100s: Beorning, Burglar, Captain, Champ, Guardian, Hunter, Lore-Master, Minstrel, Rune-Keeper
LvL 85: Warden, Minstrel
All my forum posts are my opinions and may not even be that. Also On Twitter: @leixicon