The bestselling, award-winning team of Yolen and Teague bring dinosaur fun to life in this playful board book about friendship and sharing. What if a dinosaur's friends come to play? Does he mope, pout, hide his toys, or throw things around? Time and time again, kids hear "play nice"—and this brilliantly illustrated book makes it easy and fun to understand why. Mark Teague's laugh-aloud illustrations paired with Jane Yolen's witty, rhyming text show children that playing nicely with friends is the best kind of adventure. Perfect for reading aloud together, this book is packed with humor and heart.