Diane Whipple was returning to her Pacific Heights apartment in San Francisco, California in 2001 when she was attacked by her neighbors' dog, a large Presa Canario. After her death, the owners, Marjorie Knoller and Robert Noel, were charged with second-degree murder and manslaughter, respectively.

Sources for this episode:
SF Gate - 'Dog of death': The horrific killing of Diane Whipple in San Francisco
Dog Bite Law - The Diane Whipple Case
ABC 7 News - Parole denied for Marjorie Knoller, convicted in San Francisco's notorious 2001 dog-mauling death of Diane Whipple
ABC News - Killer Dog's Owner Blames Victim
Daily Mail - San Francisco attorney whose dogs mauled her neighbor to death in 2001 is denied parole after being jailed for life for murder
Rolling Stone - Mad Dogs & Lawyers
SF IST - Woman Convicted in Notorious SF Dog-Mauling Murder Case Gets Denied Parole
Wikipedia - List of people from San Francisco
Wikipedia - San Francisco
FindAGrave - Diane Alexis Whipple