Originally Posted by Iamblitzwing

I meant before that I had seen a picture of an owlbear doing the rounds.

Oh! Didn't see it/or didn't notice that one.

To be clear the owlbear I mentioned can be a camp follower - I don't think those will join in combat. Maybe one can tame/summon a wild animal? I don't know what 5e rules and spells are.