To make a dog diaper, purchase an infant diaper and cut a hole in the back for the dog's tail to fit through. Check with a vet to make sure a diaper is necessary to deal with dog incontinence and consider information from a veterinarian in this free video on dog care. Expert: Dr. James Talbott Bio: Dr. James R. Talbott is a staff veterinarian at Belle Forest Animal Hospital and Kennel in Nashville, Tenn. Filmmaker: Dimitri LaBarge