Abstract: An inexpensive, sanitary, disposable assembly for enveloping the tail of an animal that is particularly useful in breeding and foaling. The assembly includes a guide ring that supports an elongate sleeve in overlapping folds, which ring may have the tail of the animal extended therethrough to dispose the ring adjacent the tail bone of the animal. A first end of the sleeve is removably secured to the tail bone, with the guide ring thereafter being moved away from the tail bone, and the sleeve peeling from the guide ring until none remains thereon. The guide ring is then discarded and the outer second end of the sleeve knotted for the sleeve to envelop the tail, preferably when the tail is in a doubled over configuration.