Big Dog wants to be friends. "But what is a friend?" asks Little Dog. Readers will learn the answer in this funny, heartwarming story, now available in Spanish. Friends have fun, Big Dog explains. They could take a train to the zoo, a bus to the boats, or a rocket to the moon. But before the friends can execute their plans, it starts to snow. The dogs go to their homes where Big Dog takes a bath while Little Dog puts on his boots to...