Basically, this prototype comes with a start button that is close to the ground, allowing your dog to learn to push said button with its paw in order to have it ride the basket up or down, depending on the direction where it wants to go. Of course, your dog would need to practice using this and a lack of fear of heights would help as well, as the dog elevator lifts several feet off the ground in order to traverse up and down the stairs. All I can say is, if your pooch is overweight, it is about darn time you sent it for daily walks – and chances are the owner is overweight, too.