As a Pet Nutritionist, owner of a Pet Sitting/ Doggie Daycare Company, and someone who works in dog rescue with animals that are often traumatized, very fearful and highly stressed, I am always looking for ways to naturally reduce stress, anxiety and fear, which are the the biggest reasons for fights and aggressiveness. The type of protein used in pet food is one of the biggest causes (for these issues). The levels of protein and other highly nutritious ingredients in Freshpet (especially turkey) will increase serotonin levels in your pet which we all know will lead to a calmer, happier and more at ease animal. It is likely to reduce aggression by reducing fear, and stress, depression and just make them more agreeable which is really great for any pet but especially for dogs that are rescues who have separation anxiety or a history of dog aggression. We are almost done with the conversion process of slowly switching to this food by lessening the mix of the old food, but so far they have never snubbed it and eat it just as eagerly as any other food.