When Jack first brings the puppy into the apartment to show the girls, it is said that the dog is female. However, when Mrs. Roper brings the puppy to confront Chrissy, they all call the dog "he" or "him".
After Jack gives Chrissy the dog, he places the cardboard box on the sofa, and it falls to the ground. Afterward, it is mysteriously back on the sofa.
Larry is significantly shorter than Jack in this episode. In every episode other than this, Larry is the same height as Jack, sometimes taller.