new dinosaurs all the time

This morning, Darren was teaching Gus the names of various dinosaurs with his new set of 36 plastic dinosaurs, saying each one's name aloud and Gus would attempt to pronounce them...diplodocus, pterodactyl, tyrannosaurus rex, triceratops, velociraptor. About a half hour later, Gus comes running towards me with a plastic dinosaur in his hand. He proudly yells "DINOSAURUS TOPS!"