These steps are perfect for our aging Golden Lab. He's starting to get that sway in his hips that is making it more difficult for him to jump up on our extra tall bed. He was very leery of the steps at first, and still kind of looks at them with a question mark on his face, but with some treat training he's getting the hang of them. They are extra great for getting in to the car where there isn't nearly as much room for jumping mistakes. I highly recommend them. They go together just as described in the directions, but they do take someone that is strong enough to really push them together hard. I didn't want to use a hammer, so I had to cry uncle and let my husband do it.