 Now there's a new kind of pet door that can avoid that problem. It's called the Flappy. That's right, the Flappy. It can detect if your cat is carrying something in its mouth or whenever that happens, the pet door won't open. The Flappy. In case they have a head of a mouse or a tail or something else, the Flappy will stop it. Look it up. I'm not making this up. It's new, and it's on the D's hot list today.