Talk:Grimm/@comment-25517485-20141009060707/@comment-4010415-20141009195747

I think they just start as a smaller example of their species and then grow larger.

When Ruby and Weiss faced a pack of Beowolves in the Emerald Forest, one of the Beowolves was bigger than the others.

The Ursa Major was pretty much just a bigger Ursa with more plates and spikes.

And we've now seen that Nevermores are usually much smaller than the one we saw in Players and Pieces.