Mosaic USA Dehydrated Duck Feet are a perfect alternative for dogs that are affected by food allergies from common proteins, such as chicken, beef, and pork. These little crunchy feet are a perfect, single-ingredient snack for smaller dogs. Supply: Our duck supply is responsibly harvested in the USA, using best practices by USDA guidelines. The duck are sustainably farm-raised in their natural habitat, and are free of growth hormones and antibiotics.