"After receiving reports, we quickly arrived at the site to see the situation. During the process, the dog that was biting people appeared again. We got batons from the car at once. We reminded pedestrians to keep away from the ferocious dog while we were in pursuit of the dog," said Kuang Yuejian, a police officer of the Weng'an Public Security Bureau.Following a nearly hour-long chase, the dog was rounded up and killed by police. After running wild for two hours, the mad dog attacked over 20 local residents, with many suffering bite wounds to the face, legs, arms and back.