MillyFitcat 12 step Cat Tree. Designed so that the Cat Bed on top would be at the right height to be able to pet kitty but also offer a fair amount of stairway for exercise. A Cat Staircase is an excellent way for your pet to stay healthy and fit as climbing is one of the best activities for cats. The best Cat Ladder idea is the one that will hold your pet’s interest and that’s the beauty of this item. Click or Claw over to our Etsy Shop for a full description. Meow!