I see dogs in the office all the time who, like a two-year-old child, simply have no frustration tolerance. They’ve always gotten what they wanted, but like any child, they must eventually cope with frustration but have no experience in how to manage it. Frustration is a common reason that dogs—or most any other mammal, for that matter—get aggressive. If you want your dog to be a polite house dog who is part of your family, then you need to raise her as you would any youngster and teach her how to tolerate not always getting what she wants the instant that she wants it.
