Anco Roe Deer Ribs are a single source protein and are hypoallergenic. Deer is a good alternative to more widely available proteins if your dog has common protein allergies/intolerances or food sensitivities. Gently air-dried locking in all natural goodness and flavour, these Roe Deer Ribs are a good source of novel protein, B vitamins and minerals like iron and zinc. Chewing down on the bone also helps to scrape away unwanted plaque and tartar from their teeth, leaving them healthy and clean.