Thompson RCMP say it happened on Tuesday around 6 p.m. in Lac Brochet, a fly-in community nearly 900 kilometres north of Winnipeg.
A 10-year-old girl was rushed to rushed to the local nursing station, where she was pronounced deceased.
Police say residents of the community killed two large dogs of unknown breed.
The dogs belonged to a Lac Brochet resident, but the girl did not know them.
Police say the girl's name will not be released.