I don't know about other dogs, but Tyler would not go up the pull out metal steps. He kept trying to jump up past them, but it is too high!! I helped him go up step by step, and then the same thing going down. He just didnt seem to see them. I thought to myself why does he have no trouble with the stairs in the house. I guessed that maybe he could not see them...maybe a three dimensional limitation or something. I grabbed a carpet runner and put it on the steps to make them look just like the house stairs. Voila, he goes up and down with not a second thought.