I'm pretty picky about talking animal stories - I tend to compare them all to Watership Down.
This one is pretty fun. It's the true test of a good kids' book that adults can read it without being too annoyed, and this one passes. It does fall short of Watership Down in that the animals don't quite come over as animals rather than odd-shaped people, but Cash makes a good solid effort. The book is well written and keeps its messages subtle and held within the story.