Groups of dogs (often referred to as a “pack” of dogs) have frequently been implicated in fatal attacks on humans. In one case in Philadelphia that occurred in the early eighties, a group of five household dogs ganged up and and mauled to death a 81 y.o. invalid lady. Animal behaviorist, Victoria Voith, DVM an investigator on the case tested the dogs for their temperament. A striking finding that when the dogs were tested alone, each was non-aggressive; however, when placed back into their “pack”, collectively they became very aggressive towards people.
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