An animal enclosure, having a top wall panel, a bottom rack disposed opposite to the top wall panel, two opposite first side wall panels, a third side wall panel and a fourth side wall panel. Each of the first side wall panels has a top edge hinged to the top wall panels and a bottom edge hinged with the bottom rack at a first elevation. The second side wall panel disposed between and adjacent to the first side wall panels has a bottom edge hinged to the bottom rack at a second elevation. The third side wall panel is opposite to the second side wall panel and adjacent to the first side wall panels. The third side wall has a bottom edge hinged to the bottom rack at a third elevation. The first, second and third elevations are at different from each other such that the top wall panel, the first, second and fourth side wall panels can be folded stacked with each other on the bottom rack. The animal enclosure includes at least one removable door formed on one of the side wall panels allowing the user to use the enclosure as a training space.
