When a boy asks his mother for a pet, she says no, but then the boy finds a giant dinosaur egg at his neighbor's yard sale. Mr. Jerry, the neighbor, claims the dinosaur egg is real and that night, the egg hatches into a triceratops!
Every child will identify with the longing for a pet and the tender parent-child realtionship that this book projects and at the same time, revel in rollicking dinosaur fun!
The triceratops gets into mischief, leads the boy on a chase, and into a whole dinosaur herd. "Do something," Mom says, and he does by making the dinosaurs disappear. After order is restored, Mom gets the boy a pet puppy, which is what he wanted all along.