Pet Parents dog diapers, washable female dog diapers, reusable pet diapers, ecoā€‘friendly dog diapers, small dog diapers, princess dog diapers. The Pet ParentsĀ® Washable Dog Diapers in Small size (9″ā€“15″ waist) are a premium, ecoā€‘friendly solution for incontinence, excitable urination, untrained puppies, and females in heat.