One of the most fascinating aspects of canine nutrition, to me, is just how far-reaching the effects of what your dog eats can have on the rest of their lives. It’s not just giving them the energy to live, play, and enjoy life. What they are taking into their bodies effects every organ, including the brain. That is why assessing nutrition and behavior together are integral to an anxious dog’s life. Too much protein can increase aggression, as this short but information article at the Mercola site mentions. Read about other things you can do to help calm your dog and reduce anxiety and aggression here.
If you’re dog is acting aggressively for no easily explained reason, check your dog food protein level. If it’s above 32%, you might consider switching to one with a 30% or less level of protein.