Actually, that is a young buck. He's trying to butt heads with the horse, which is how bucks fight each other. I'm pretty suprised that horse was able to avoid those pointy little prongs, and he seemed to tolerate the boisterous youngerster
That's a buck and he's trying to start up some trouble! Feeling his oats and territorial! That Halfi is tolerable of him.
Oh young spike and he's looking for trouble! Thank goodness this Halfi is calm about it! Spells trouble if you ask me!