It is the perfect height for our 6lb little chihuahua to get up onto the chair or couch but it seems awkwardly steep for her to come back down. The two steps are the same depth. The middle step needs to be a good 3 inches deeper and the bottom platform needs to be good 5 inches deeper. She is is learning to maneuver it which is better than doing a swan dive off the furniture which is what she usually does...otherwise it is solid and well made. The kitty also likes just sitting on it so it is a win-win..!