Crumps' Naturals Traditional Liver Fillets Dog Treats are made from all-natural, low-fat, 100% Canadian beef liver that are sliced thin and slow-baked, resulting in a crunchy texture dogs love! The liver is federally-inspected and contains no colors, additives or preservatives. Great as a training treat, the large pieces break down into smaller pieces without crumbling. These treats will surely make your dog dig in, because a carnivore will know the difference when they sink their teeth into pure meat as opposed to other grain-free treats; it is what a carnivore's digestive system is supposed to digest in the first place. Trainers, vets and dog enthusiasts agree that there is no finer reward for your dog.