Bunnicula by James Howe

Bunnicula - a rabbit tale of mystery - James Howe

Harold the Dog and Chester the Cat must solve the mystery of the white dessicated vegetables and if this has anything to do with the home's new pet rabbit that sleeps during the day and can escape from his unopened cage.  This is a childrens book but the author doesn't talk down to children or use overly simplified language.  The story is cute and funny, while the characters each have their own personality.  An entertaining read for children and older "children".