Built from eight 24 x 24 in carbon steel panels, this foldable dog playpen and exercise pen creates a 24 in side-length octagon for puppies, cats, rabbits, and small breeds indoors or outdoors. The frame ships pre-assembled and unfolds in about five minutes without tools, then folds flat for storage. Eight heavy-duty ground stakes plus eighteen tension straps anchor the pet playpen on grass, dirt, or carpet, while two slide-bolt latches secure the door against curious noses. Use it as a portable dog fence for the yard, Rv, or camping trips, or as an indoor puppy pen that keeps small dogs safe and contained.