I agree. Consider it good exercise...constantly getting up from the sofa. I bought a dog door for my pooch. It could be mounted through a door or even a wall, had a clear rubbery flap with a magnet on the bottom to keep it from flapping in the wind, and a solid panel for 'locking' it when not in use. I never got around to installing it. If my pal can keep the trails clear of bears and other critters ahead of me, and warn me of bad guys poking around the back yard, I think I can manage to open the door for him a few times (ok, maybe 20 times) a day.