How Do Dinosaurs Go to Sleep? by Jane Yolen, and illustrator, Mark Teague, This fun bedtime book filled with dinosaurs that just aren't ready for bed. You'll recognize the familiar bedtime struggles when the dinosaurs put up an end of day fuss, when their human parents are ready to call it a day. This humorous story makes for great bedtime fun! Board book, 12 pages. Recommended for ages 1 to 3 years old.