Rob claims he is allergic to Horrible, but had no problem with allergies to dogs when Buddy's dog, Larry, stayed at his house on two separate occasions, including an occasion when Larry slept in his bedroom.
To get Horrible prettier, Laura tells Rob to call the Puppy Palace. When they get to the groomers, Rex' jacket says Poodle Palace.
When Rob looks up "Dog Salon" in the phone book, he is looking towards the back of the book instead of in the front.