This is just a facebook video - but it's real.

and they are not "buffalo" - they are BISON.

we have video of them walking right past our car. A bison can jump about six feet in the air,

run about 32-35 mph from a bolt, and can weigh about 2000 lbs.

Dangerously powerful. I'll start posting some of our pictures/videos in the next few days.

Male bison (bulls) can weigh up to 2,000 pounds, and females (called cows) can weigh up to 1,000 pounds. Bison calves weigh 30–70 pounds at birth.

National Park Service Department of the Interior

https://www.facebook.com/reel/1301027065304028