On December 25, 2007, in Yermo, California, 45-year-old Kelly Caldwell was killed by up to five dogs. The dogs were running at large on the street where the victim was walking. The dogs were pit bulls and at least one belonged to a neighbor. Click here to read the news account.
From my Dog Attack Danger Scale, the following two factors were present in this attack: the dogs were pit bulls, and the pack mentality was evident. At least one of these dogs was individually vicious: as paramedics were trying to save the woman’s life, one of the pits had to be shot to death to keep it from getting at the victim again.