One day Andrew and his dog Rocky went for a walk They walked and walked. After a little bit, they walked past a big tree. Poof! Rocky was a robot dog. "Woof, woof,"barked Rocky the robot dog. "What is going on?" asked Andrew. "Who turned my dog into a robot dog?" Andrew looked all around him. He looked up the street. He looked down the street. He looked behind the tree. He looked up into the tree. No one was there. He stopped and stood still. "Hee, hee, hee," he heard. It came from the tree. "Woof, woof," barked Rocky the robot dog at the tree.Andrew looked at the tree. He could not see anything different about this tree. He could not think of what to do."Tree, are you a real tree?" asked Andrew. The tree did not say anything.