Don't mess with Mama Bear!

Calvin Barrett, of Colorado, was driving through Montana's Beartooth Highway when he spotted a mother grizzly and her three young cubs. 

In video footage captured by Barrett, you can see the cubs attempting to climb over a snowbank, but what happens next should be a lesson to everyone who comes across any wildlife—especially mother bears. The mama bear's protective instincts kick in and she charges at Barrett's car when he gets a little too close for comfort.

Check out the video posted on Barrett's Instagram below:

So, lesson learned: don't cross mama bears and keep your distance.

If you're interested in more bear-related content, we've got you covered!