The Hamster Ball Containment Device provides a means to protect both the pets which use “hamster balls” to move about, and the people whom are in their presence, while also protecting the floor from animal droppings. The device is meant to be used in conjunction with a third partys “hamster ball”. The device is constructed of hollow foam tubes, connected together by smaller, rigid tubes which are inserted into the foam tube ends. The foam tubes are large enough in diameter to stop a traveling hamster ball, thus keeping the pet within the defined area. Attached to and beneath the assembled tubes lies a washable cloth when the animal defecates, the cloth bottom shall protect the floor from damage.