"Based on the characters created by Peter H. Reynolds"--Title page.

Surprises are in store as Stink excavates his backyard in search of a relic from an extinct beast -- and Judy lends him a little sleight of hand. Mega-chomp! Stink wants to make the find of the century. He's on a dig, dig, digging quest in his backyard to find a tooth from a saber-toothed cat, otherwise known as a Smilodon. Why not? Two kids in Michigan found a mastodon bone in a backyard stream, and a girl in Great Britain found a pterosaur bone. It could happen! But Judy thinks the chances of finding a saber-toothed anything in the Moody backyard are one in a gazillion million. Will Stink make a discovery before their whole backyard caves in? Just right for newly independent readers, this latest story from Megan McDonald is sure to leave Moody fans with smiles as wide as a Smilodon's.