As the saying goes, dogs are human's most loyal friends. However, in the Bayi community of Sa district in Daqing city, a tragedy that shocks the conscience has happened - Tibetan Mastiffs ate a person. On December 5th, it was freezing cold and snowing heavily. Around 9 o'clock in the morning, Zhang Ming (a pseudonym) went to the doghouse to feed the dogs and had not returned by 2 PM.