This is a cute book with dogs as detectives. Jack Russell solves cases with a Fox Terrier named Foxy. I read this aloud to a four-year-old boy. We both enjoyed it. We had a lot of fun with words like "pawfect" and "terrier-tory." Also, Jack makes "nose maps," which are maps of all the smells he can smell in the air. A fun read aloud or for young readers, especially appealing to dog lovers.