The mystery of dinosaur extinction is solved Scientists have plenty of theories about why dinosaurs are extinct, but the UK's bestselling authorillustrator team of Claire Freedman and Ben Cort knows the real answer: The dinos were wiped out in an Underpants War This wacky celebration of underpants is perfect for reading aloud, and the hilarious antics of T. rex and the gang are endlessly entertaining. Featuring fun, vibrant art and short, rhyming text, Dinosaurs Love Underpants is a prehistoric pleasure parents and kids will want to read again and again.