Animals that might secretly live in a bookshop. Some experiments and some criteria:
I don't think these look quite right -- I think they should be more
monkey-like, these are more like kangaroos. They should better suited
to climbing than running. I also like the idea that the books the animals ate would affect their brains. So the brainy leaders of the pack eat history, business and philosophy -- the silly ones had been eating books about fairies and fortune telling.