Abstract: A pet house substantially formed from a unitary blank of material, foldable from a collapsed state for shipping and storage to an erect state for use. The house includes a bottom having four edges. The house also includes first and second side walls and first and second end walls. The side walls are attached to one another forming an apex at the top of the house. One end wall includes an opening to permit the pet to ingress and egress the house. The bottom includes a slot near one edge for receiving a locking tab which extends from one of the side walls. Fasteners are provided for attaching the first and second end walls to the first and second side walls.