A dog is walking down the street, when he sees a bone in a trash can. “A bone! Yippee! How lucky for me!” he thinks. He grabs the bone, and happily runs home. He runs past the train station and the school. He runs through the park. He runs onto a bridge. On the bridge, the dog looks down into the deep, still water below. There, he sees another dog with a bone in its mouth. “Who is that dog?” he wonders. "What is he doing down there?" The dog stares at the other dog. The other dog stares back. “Where did that dog get such a BIG bone?” the dog wonders...