Grizzly bears and wolves don't always get along, but as this video footage obtained by USGS researchers in Glacier National Park demonstrates, sometimes they will tolerate each other.

The footage, which depicts a sow and two cubs interacting with a wolf, was shot in August 2007 as part of the USGS's wildlife research in Glacier. Wildlife biologist Kate Kendall told The Associated Press that the wolf probably would have tried to kill one of the cubs if the sow wasn't around.

"I have no doubt that if the mom was not there and the wolf had the opportunity, it would eat the cub," Ms. Kendall told the news agency.

(Thanks to Random Walker for pointing out this video.)