Dinosaurs Propagating Their Species, as Explained by a 9-yr-old

Scene: C (age 6) and S (age 9) are looking at a book about dinosaurs . . .

C: "Are all dinosaurs boys?"

S <giggles>: "No."

C: "Are they all girls?"

S <giggles>: "No. Some dinosaurs are boys and some are girls. It has to be that way in order for dinosaurs to get married and have kids."

C: "Dinosaurs get married?!"

S: "Yes, but it's called 'mating'."