The Leap-N-Play Treehouse features a unique birdhouse design that allows cats to frolic or take a cat nap. Cats love the carpeted scratching post and the birdie-on-a spring for swatting fun. They also love the carpeted birdhouse with its wide open back that allows for easy entrance and exit for cat naps and peek and play fun. Owners appreciate its two-piece assembly that securely snaps together without the need for tools. Sand or cat litter can be added to the base for added stability.