With Crumps Naturals Mini Trainers Freeze-Dried Beef Liver, learning never tasted so good! These freeze-dried, all-natural treats start with North American beef liver as the number one ingredient. Each flavorful, bite-sized morsel is only one calorie, making them ideal for the repetitive rewards required during training. Whether you are treating or training, these high-protein treats are a great tool to motivate your pup and help him grow to his full potential!