Enraptured by a Raptor? Transported by a triceratops? Here's a comical collection of dinosaur riddles certain to chomp their way into your heart. What do you call a dinosaur in a cowboy hat and spurs? Tyrannosaurus Tex. What do you call a sleeping dinosaur? A Stego-snore-us. Katy Hall and Lisa Eisenberg, the popular authors of Ribbit Riddles and Mummy Riddles artist Nicole Rubel bone up on these claw-some creatures in another hilarious book for eager joke collectors. Dino.