Abstract: An animal enclosure is provided which is particularly adapted for cat. The animal enclosure includes a housing having a base, a sidewall extending upwardly from the perimeter of the base, a hollow interior space surrounded by the sidewall, an access opening in the sidewall to permit an animal to enter and leave the hollow interior space. A frame is attached to an interior surface of said sidewall, and a corrugated bundle is removably retained by the frame. The animal enclosure is collapsible and is capable of being shipped and stored in a compact configuration but which is capable of being erected on site to create an animal enclosure.