Kitty the Dog
Dogs can get super-jealous if your attention deviates for even the briefest moment. You might be talking to a friend on the phone, and your dog will come over and show its sad eyes for love and pats. In this story, the dog’s jealousy got so bad that it would come over even when calling for another pet.
After the OP’s roommate adopted a cat, she would say “kitty” to call the cat over for treats and love. It didn’t take long for the dog to pick up on this verbal cue. “Kitty” meant “treats” to the dog’s ears, and it would make a beeline to the roommate for some much-needed snacks.