A cat tree is a specially designed structure that combines elements of a tree and a playground for cats. It typically consists of multiple levels or platforms covered in carpet or sisal rope, providing cats with a vertical space to climb, scratch, and perch. The cat tree often includes various features like scratching posts, hiding spots, dangling toys, and even elevated beds or hammocks for cats to relax and observe their surroundings. It serves as a dedicated space for cats to exercise, play, and satisfy their natural instincts, while also offering them a cozy and comfortable spot to rest.