Name the dog "cat"
Is that short for anything, like Cathy?
Yes, it's short for "cat".
Actually have a friend who found an abandoned kitten in his shed, He named the cat "dog".
This became rather funny when dog got older and they realized he was a maine coon, which instinctively act as much like dogs as they do cats.
Always good for a laugh watching people's reactions when he starts playing fetch with dog. No one has ever seen a cat bring a thrown ball back. lol