Prehysteria!

Rico Sarno, a museum curator, enters a forbidden temple in South America and discovers a nest of five eggs. He steals them and brings them to his museum. Frank Taylor, a raisin farmer, sells fossils to Rico, which leads to the eggs being taken by his kids' dog, who then delivers them to the family's home. The kids discover the dinosaurs when they hatch and try to keep it a secret until their father finds out.