Similar to Gigantopithecus, they are docile until they see you, at which point they will come after you. They are faster then you'd think an ape horse would be, and they toss boulders and mud at you which will slow you down. Plus their melee is pretty nasty it seems. Steer clear of them unless you want a fight.
To those saying Chalico’s produce beer in its inventory, it doesn’t. It’s tamed with beer, and doesn’t produce it. Don’t let these people fool you. Hit the ⬆️ if this tip helped you, and thanks for hearing me out.