Annie, a 13-year-old longhair, tortoise-shell cat presented to the Cornell Behavior Service on April 15, 2004 with the presenting complaint of aggression towards her owners. This behavior seemed to occur during stressful times and usually involved loud noises. Whenever she was aggressive, immediately after the episode, Annie was placed in seclusion until she calmed down. Annie's actions became a serious concern to her owners when she physically injured one of the children in the household. A complete blood count, chemistry analysis and T4 were drawn to rule out medical causes of aggression. Laser dewclaw was performed and although the aggressive behavior has not been changed, Annie no longer causes physical injury.