You won't believe why the Old Scientist swallowed a dinosaur, a fern, a rock, a pick, a dustpan, a sifting screen, a pen, and a magnifying glass! There was an old scientist who swallowed a dinosaur. I don't know why she swallowed a dinosaur but she needed to explore. Filled with hilarious illustrations, fun rhyming text, and real facts about dinosaurs, this is the latest book in the bestselling Old Lady series that's perfect for young readers.