I probably read this when I was about 10... And although I honestly don't remember much of it, I remember that it was my favorite book.
When I have a kid, I'll probably buy them a copy to read, maybe they'll like it too.
It is a masterpiece, like all the rest of the books produced by Brian Jacques. *sings* Its no acception to the rule, it irresistable you fool, give in. *shakes tush*