Raptor

Out in the mountains, Zack and his friend, Uta, discover what they think is a large fossilized dinosaur egg. This could make their fortune! Zack takes it home to keep it safe. Only the egg isn't fossilized - it's hatching! And there's an angry mother dinosaur out there, who wants her baby back. Includes a full length fascinating interview with the author, Paul Zindel.