The Batter-Horn is a species of terrestrial, flightless wyvern native to the grasslands of Shangrila. These large herbivores get their name from the battering-ram-like horns on their head. If threatened by a predator, they will charge at it, head lovered, and batter the foe with great ferocity.
If they encounter something that isn't an obvious threat (like a human or elf) they will simply ignore it and move on with their day. They can be rather docile if left unbothered.
Outside of defense, these wyverns sometimes use their horns to upturn fallen logs or boulders in search of tasty herbs and mushrooms.
They do not possess a breath weapon, instead relying on their sheer, brute strength to get by.