Vocal Bison Trudge Through Snowy Wildlife Park in Washington

American bison made grumbling sounds as they trudged through the snow at Northwest Trek Wildlife Park in Eatonville, Washington, video posted on February 12 shows.

Northwest Trek Wildlife Park shared this video of snow-crusted American bison with the caption “Not everyone is thrilled with the snow.”

Bison stay warm during the winter by growing extra fur and thickening their skin in chilly temperatures, Northwest Trek Wildlife Park said. Bison can also use their head, neck, and shoulders to plow through snow. Credit: Northwest Trek Wildlife Park via Storyful