Orphaned

Snub is a young female gorilla somewhat jealous because her mother is occupied with a new baby curious of the world around her a world that is being reshaped by shaking ground and mountains that bleed fire and most terrifyingly by a new form of predator that walks on two legs; when her mother is killed Snub finds herself in charge of her baby brother--and accompanied by one of the not-gorillas a very young female who has been orphaned by the violence of her own kind.