In 7th, we have:
Famine in Far-Go:
So, incects, arcahnids, (presumably between the two you can handle any sort of arthropod), cats from house to big, birds, swarming critters, large furry critters, and apes.
That leaves quite a lot of animal types, some of which show up in...
Chandrak's Custom Origins Thread:
So, what sorts of mutated animals have you played in the past (or would like to play)?
(Especially any that wouldn't fit into the existing origins.)