Every dog treat is not necessarily a successful training reward! The Crazy Dog Train-Me! Training Rewards have been tested and recommended by thousands of professional dog trainers because they have proven to attract, focus, motivate and reward dogs for learning a task. That helps shorten the learning curve and make training lessons more successful. Pork Liver is the first ingredient in all our treats. To add variety to your dog's training sessions, bacon, beef, chicken or salmon are added to the pork liver.