[Angel Spirit Girl]

I saw a cartoon special based on the Bunicula book when I was a teenager or so. It was a cute episode, but when I read the book later on I was disappointed. The book is for quite young readers - like elementary school.

Ratha's Creature is a book that had a cartoon special made of it that is much more young adult than early chapter book. The characters in that series are saber toothed cats. I liked them a lot.