Duck Feet provide a highly stimulating, crunchy, instinctual chew packed with nutrients like, calcium, magnesium, glucosamine and chondroitin. As the chew breaks down it works to clean teeth. Snack Station treats come in clear, apothecary-style containers that are sealed to ensure peak freshness. They're 100% free of any by-products, artificial flavours or additives. This & That Snack Station uses only the highest quality, human-grade, federally inspected proteins.