Pork has great palatability and is irresistible to dogs and cats. Pork is a good source of iron, copper, niacin, zinc, and phosphorus. It will provide your four-legged friend with vitamin B, omega-3, and omega-6 fatty acids. This human grade pork liver is sourced in Canada. Only single ingredients are used; either 100% Fish or 100% Meat. No fillers, artificial flavorings or preservatives are used in the making of these treats. The treats are dehydrated over a long period of time. Most for over 20 hours. Due to the long drying time treats remain in perfect condition for over 2 years.