Incredible footage of black bear saving her cubs from male in Yellowstone

This is the moment a black bear saved two of her cubs from a big male bear in Yellowstone National Park.

The rare footage captured among the US wilderness shows the mother bear leading her cubs up a tree away from a male bear in an attempt to keep them out of danger.

“The mother bear not only sent her cubs up a tall tree but also herself! Seeing an adult black bear in a tree is quite a sight!” the filmer wrote online.

Male black bears have been known to kill cubs in order to mate with the female.

In the video, you can hear an onlooker say: “What a good mum! She’s making sure the male is really gone with one last sniff.”