I'm sorry, he should be there! I'll double check the files later on and if I've actually left him out I'll push out an update straight away.
It wasn't missing, I'd just uploaded it in the wrong file type. I've added some variations too, you'll find them in the updated version of the asset pack that I just published. They're located in Old>16x16>Tanuki. Thanks for letting me know about this!
Thanks a lot <3