Dog eat dog

the long version

Leo's determined to win the Weirdsville Dog Show this year with his scruffy mongrel, Scout. But when he finds his dead pet gerbil dug up and stuffed in a local curiosity shop, he begins an investigation which will put him and his friends in terrible danger. Soon he uncovers a conspiracy to create a new kind of dogfood which has a monstrous effect on anything that eats it. What's more, the inventors are prepared to do anything to keep their secrets.