Guys I just saw the funniest thing. Our cats love the carriers for lounging atop of or inside of (and we have 3, 2 small ones, and one that was meant as a dachshund living quarters many years ago, so is huge!) Very often, as we keep the smaller carriers stacked, we find Paige in the upper "bunk" and Gibby in the bottom one, or sometimes a cat sitting on top of the stack (It's right next to my desk) well just now, Paige was being what we call "death from above" kitty, on top of the two carriers, and Gibby was inside the upper carrier. They went on for a few minutes having a swat war and then, all of a sudden i see gibby shut the door of the carrier on himself! I guess he had had enough lol!