How to Identify Bison in Missouri

American Bison are significantly larger than cattle. A mature bison bull weighs 900 to 2,000 pounds and stands 5 to 6 feet tall at the shoulder, while cattle typically weigh 800 to 1,400 pounds and stand 4 to 5 feet tall. Bison have a more compact, muscular build with a pronounced hump above the shoulders. The bulk of their body weight sits forward, creating an imposing silhouette. This front-heavy stance is immediately obvious when you see a bison standing next to domestic livestock.

American Bison have a thick, shaggy coat that ranges from dark brown to almost black. The coat is darker and denser during winter months and lighter and shorter during summer. The hair on the front half of their body, especially the shoulder hump and face, is particularly thick and shaggy. The tail is dark brown and relatively short. During shedding in late spring and early summer, bison may appear patchy or rough as their coat transitions. By mid-summer, the new coat comes in lighter and smoother.

Bison horns are much shorter than cattle horns, measuring 12 to 20 inches in length, and curve inward toward the head. The horns are relatively thick at the base and set far apart on the head. In contrast, many cattle breeds have longer, more prominent outward-curving horns. A bison's horns are also darker and less polished-looking than cattle horns. If you see an animal with a massive humped shoulder and relatively short, inward-curving horns, it is almost certainly a bison.

Bison have distinctive facial features. They have a broad, heavy head with a pronounced bulge on the forehead. Their eyes are small relative to the size of their head and sit on the sides of the face, giving them a wide field of view. The nose is broad and black, and the face is covered in thick, long hair that extends down from the hump. The jaw is strong and heavily muscled. Cattle have more refined facial profiles with longer snouts and more prominent eyes. A bison's face looks massively built and powerful by comparison.

Bison hooves are approximately 5 to 6 inches across and round or slightly oval in shape. The track shows two distinct toes, similar to cattle but larger and more robust. A bison track measures about 5 to 6 inches wide. The stride length is typically 24 to 30 inches for a walking bison. In soft ground or mud, the imprint is deep and well-defined because of their significant weight. Bison trails often show the hoof drag marks from their shaggy legs brushing the ground.

Bison are stockier and more heavily built than elk or moose, with a much lower center of gravity. Their body is barrel-shaped and wide, whereas elk have a more upright, leggy frame designed for running. Bison do not have the long, thin legs of elk or the massive palm-like antlers of moose. The most obvious difference is the pronounced shoulder hump on bison, which elk and moose lack entirely. Moose are taller at the shoulder than bison, but bison are broader and heavier. If you see an animal with a massive shoulder hump and relatively short legs, it is a bison.

In Missouri, the only large animals that might superficially resemble bison are domestic cattle and, very rarely, feral horses. Cattle are smaller, lack the shoulder hump, and have a more refined build. Horses have long, thin legs, a long neck, and no shoulder hump. Moose do not occur naturally in Missouri. If you encounter a very large, heavily built animal with a massive shoulder hump and thick shaggy coat in a Missouri preserve or refuge, it is almost certainly an American Bison.

Peak sighting months are April, May, and June based on iNaturalist observations. During this time, bison are more active and visible in the prairie restoration areas and preserves where they live. Early spring provides the best visibility as the vegetation is not yet fully grown. The primary locations for bison viewing in Missouri are protected preserves and prairie restoration areas. Check current access policies and sighting reports before visiting any location, as bison populations in Missouri are small and localized.

Maintain a distance of at least 100 yards from bison at all times. Never approach a bison on foot or attempt to feed or photograph one at close range. Bison can run at speeds exceeding 30 miles per hour and are capable of sudden, aggressive behavior when surprised or threatened. In Missouri, most bison viewing takes place in managed preserves where viewing areas are designated for visitor safety. Always follow posted rules and guidance from preserve staff. If a bison shows agitation by lowering its head, stamping, or snorting, immediately leave the area.