My aging dog starting to have arthritis. He is 12lbs dog. This is an amazing Ramp. The hinge helps keep it from falling down. Right height for my two stacked bed. The only thing I did was add a piece of 2x4 and rolled a towel on top of it to give it height to help my dog step up. I think it was too steep for him. Other than that does the job of getting him to use ! Highly recommend!