The. Next question would be, what was the wolf?
A small boss or a rare spawn?
If I recall it spawned twice in a row and in the same area. So you would think it is maybe a static spawn which would be a boss and I agree it should be a unique look ( like the dwarf Boss they showed later )
But if it is just a rare spawn I could see it looking the same as the others, and hopefully spawning in different points in that area.
Seems to me that it would be totally normal, especially in the animal kingdom, but in a martial society also, for the 'boss' to be just like the others, basically, but bigger.
Op I can see where you are coming from. Though, I think there will be some diversity with bosses. It may vary on things like environment. Will be good to see more this coming year.