Alex is set on a dinosaur for a pet. So his grandfather took him to the Dino-Store to buy one, a Massospondylus. He called her Fred. But Fred ate far too much; her special hot steaming marsh in the bathroom was unhealthy; and when she goes to school the classroom makes her feel very sick. They have to go on a walk in the country - and now even Alex says, This is going too far! In the end, Alex is the first to agree when his grandfather suggests that his pet should actually be...a rabbit!