Crumps' Naturals Sweet Potato & Liver Chews have a generous coating of Crumps' delicious liver sprinkles on one side. They are packed with vitamins and minerals (Vitamin A, B6, Potassium, Phosphorus, Iron, Thiamin, Riboflavin, Niacin & Calcium) and fibre. This human grade, wholesome treat is high in fibre which has been proven to dramatically improve digestive health. Crumps' Naturals Sweet Potato & Liver Chews are hypoallergenic - great for dogs with wheat or corn allergies. Crumps' Naturals uses fresh Ontario grown Sweet Potatoes straight from the farmer's field.