This is a cat tree forest composed of cat trees of different sizes and heights. Cats can play and shuttle between the trunks. Cat trees of different sizes, shapes and heights bring visual beauty. A cat tree without a cushion allows cats to grind their paws. The small ball on the tree is a toy for cats. The mats of different shapes not only allow the cat to rest, but the stairs formed by its different heights also provide a place for the cat to climb.