An animal enclosure includes an inner wall defining an enclosure space for an animal and an outer wall at least partially surrounding the inner wall. A gap is defined between the inner and outer walls. The gap is filled with a gas such as air in some embodiments. In other embodiments, the gap is filled with a filler material such as foam or polymer material. The animal enclosure includes an upper housing member and a lower housing member in some embodiments. The upper and lower housing members may be secured together using one or more fasteners to form the animal enclosure. Each of the upper and lower housing members is rotational molded in some embodiments. Each of the upper and lower housing members includes an outer wall and an inner wall, each separated by a gap, in some embodiments.
