Foiled Plans?

Tom Selleck found out today that his owners are not adopting another cat. But we are not going to give up on having a sleep over. Instead of another kitty, we all decided we'd invite Lotto the puppy dog to join us so we'd have an even number. Crazy Guy insists it has to be an even number of animals for a successful sleep over. Don't know who made him the expert since none of us have ever done it. Anyway the big challenge will be getting our owners to understand that we want to do this. We're open to any and all suggestions.