A device to be worn by a dog or other animal to accept and retain primarily feces. The device includes a contact member contoured to the general shape of the animal buttocks and designed to be secured adjacent to the buttocks of the animal. The contact member includes an aperture designed to circumscribe the anus of the animal. A disposable container is secured in the aperture by a retaining insert. The device may be secured adjacent to the animal by means such as straps which originate from a harness worn by the animal.