In some cases, drives and instincts may kick in causing aggressive behaviors in dogs. (puppy-training-solutions.com)
In most cases, there is a clear and identifiable reason for aggressive behavior in a dog, although it can be difficult to understand and diagnose. (dog-health-guide.org)
There have been few studies that have shown any real reduction in aggressive behavior in dogs fed a low protein diet. (happytailsspa-blog.com)