Unfortunately, our 11 year labrador reached the third step with his front paws (being tempted by treats) but his hind legs stubbornly remained safely on the ground despite repeated attempts to encourage him! He is well used to going up and down stairs in the house but we have so far not convinced him that it is safe to use the steps/ramp. We haven't given up hope (as we are now restricted if we need to transport him anywhere) and are considering covering the steps with carpeting so he can get a better grip. I think the surface of the steps/ramp would be improved by a carpeted surface - will let you know if this works. In the circumstances it's difficult to give a rating.