It's Thanksgiving Day and Rex and his dog called Bones are on their way to dinner when they find themselves in the middle of a dinosaurs' Thanksgiving.

An encounter with a fellow trick-or-treater whose dinosaur costume is remarkably realistic gives a boy a Halloween full of surprises.

Crazy about dinosaurs, a boy and his dog imagine they see one under every lump of snow until the day they get a big surprise. Includes an illustrated glossary listing various dinosaurs and their characteristics.