I have a very high bed, so I was looking for steps or a ramp for my chihuahua that was higher than the standard 15”. Unfortunately, I misunderstood that the 21” in the description (which would have been perfect!)  is the depth, not the height, so I am disappointed that I cannot use it for my bed. I tried turning the steps on end so the depth would then become the height but my dog won’t use it at all as the steps are too narrow and steep and she is too nervous. There is another bed in the house for which the steps work fine. I’m just sad that we can’t use it for my bed, as that was the purpose for buying it.