Arleen Dunson was there. She was there, outside Boise, among the other surrounding police, when three pit bulls came blitzing towards tactical from around the corner of the decrepit house, like sharks with legs, swinging ropes of drool, rodeo-eyed and thinking kill kill kill. Two of the dogs were hooked and pulled away, no problem. The last one, incensed and alone in the dust, bucked and sprung back and forth…