A buffalo ran amok in Hai Duong city Wednesday, severely goring two people including an old woman, Nguoi Lao Dong newspaper reported.
The animal appeared in a residential area at around 5:30 a.m. when Chu Thi Be, 82, was jogging, and butted her in the stomach, leaving her badly injured.
It then gored Nguyen Thi Thuyen, 19, who was rushed to hospital with multiple injuries.
Residents and militiamen managed to shoo the buffalo out of the area before killing it.
Authorities in the northern city are looking for its owner.