One of the first books I can remember is one my father gave to me, called Little Raccoon and the Thing in the Pool, by Lilian Moore. It’s about a raccoon who, while going fishing, sees his own reflection in a body of water. But he doesn’t know it’s his reflection, and he becomes frightened of it. Each time he encounters the thing in the pool, he tries a different tactic to scare it away. Making a mean face, shaking his fist, etc. When he takes these actions however, the Thing does them right back at him.