Many top trainers, law enforcement agencies, and pet owners have switched to Extreme Dog Fuel and brag about the results. We don’t pay for their endorsements. If they use or recommend Extreme, it’s because they truly believe it’s the best dog food available. Several veterinarian clinics and hospitals endorse Extreme Dog Fuel and recommend it for their patients. In fact, many veterinarians feed Extreme to their own dogs. They could feed their dogs any brand – but they choose Extreme.