Family members said "Buck," a rescue pit bull of five or six years, "would never intentionally hurt her," referring to 89-year old Joan Caffiel.1 On Tuesday morning, Buck suddenly attacked and killed Caffiel. "I don't know what happened, but that is totally not like Buck at all," the victim's grandson, Peyton Faircloth, told reporters. Faircloth said his grandmother suffered from dementia. At the time of the attack, she was being watched by a hired caretaker. "We had Buck for about five, six years. There was not a mean bone in that dog's body. That dog would sleep with us in...