Wildlife in HW2?

So, to get into the mood for Halo Wars 2, I recently read Hunters in the Dark again, and one question crossed my mind:
Will we meet Blind wolves, Chaefka and other creatures that live on the Ark in the game? They seem like strong enemies, and should certainly provide some kind of problem to the forces of the SoF and maybe even the Banished. Also, the Chaefka were actually cut content from the first game.
To sum up: Do you hope that we will see them make an appearence in HW2?

Yes yes yes and yes! I don’t think it will happen but having wildlife would be amazing!

Why shouldn’t it happen? Just add them as some neutral spawns that don’t attack anything if not “enraged” but really do much for the atmosphere of the game.

I definitely would not be opposed to maps having different elements to them other than “free reactor here.”