Nancy Williams is certified by the Animal Behavior Society as an associate Certified Applied Animal Behaviorist. Ms. Williams operates a private pet consulting business that specializes in training dogs with behavior problems, specifically aggression and phobias.

She has been training dogs for 30 years in all areas, including basic puppy training, obedience, and agility. She retrains dogs with serious problems, maintaining several as her "working partners" at her facility. She is also a  registered veterinary technician, and an AKC (emeritus) and UKC judge. Ms. Williams has served as a committee member and expert for many dog-related organizations, and is actively involved in working with local rescue and shelters.