A collapsible pet enclosure is provided. The enclosure includes a pliable cover supported by a rigid, but foldable, frame. The cover includes an opening in a top panel such that the enclosure is top loading. The cover is completely removable from the frame so that it can be machine washed. The frame is of one-piece jointed construction so that it is collapsible for easy transportation or storage. Because all frame components are jointedly attached to one another, the frame does not include any loose components that are easily lost. The enclosure is quick and easy to set up and collapse.