" See the dog in the mirror?” CJ asked. I heard the word “dog” and figured she wanted me to go through the door. I walked in and immediately stopped dead: there was a dog in there! It looked like Rocky. I bounded forward, then pulled back in surprise as it jumped aggressively at me. It was not Rocky—in fact, it didn’t smell like any dog at all. I wagged my tail and it wagged. I bowed down and it bowed down at the same time. It was so strange, I barked. It looked like it was barking, too, but it didn’t make a noise. “Say hi, Molly! Get the dog!” CJ said. I barked some more, then approached, sniffing. There was no dog, just something that looked like a dog. It was very strange. “You see the dog, Molly? See the dog?” Whatever was going on, it wasn’t very interesting. I turned away, smelling under the bed, where there were dusty shoes. "
― W. Bruce Cameron , A Dog's Purpose Boxed Set