Her father, a migrant worker living in the village, told reporters that the girl had arrived in Beijing the day before from Anyang, Henan province.
The incident occurred at 4 pm when a meter-long Tibetan mastiff owned by a neighbor suddenly attacked the girl. In less than a minute, the dog severely bit through the girl's face, exposing bones on the right half of her face, the father said.
The dog owner heard cries for help and stopped the dog. Nannan was rushed to Beijing Children's Hospital for immediate surgery, while the Tibetan mastiff was taken away by police.
Nannan received more than 40 stitches on her face. Her chest, abdomen and hand were also injured.
Doctors said she needs more plastic surgery to repair the facial wounds, but the father said the family cannot afford the price, estimated at 200,000 yuan.
The dog owner was quoted by Mirror Evening News as saying she will be responsible for any further treatment the girl needs.
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