American Bison
Bos bison
Mammal · Extirpated as a truly wild, free-roaming native species in Iowa, though present in captive or managed conservation herds.
Summary
The American Bison is a massive, heavily built mammal known for its shaggy brown fur, massive shoulders, and curved horns. Once roaming the Iowa prairies in vast numbers, this iconic species was extirpated from the wild due to overhunting and habitat loss. Today, bison can only be found in managed conservation herds or private enclosures within the state.
Identification tips
Look for a massive shoulder hump, a broad, heavily horned head, and long, shaggy dark brown fur on the front half of the body. Adults are exceptionally large and bulky compared to any other local mammal.
Habitat
Historically inhabited expansive open grasslands, tallgrass prairies, and savannahs. Currently restricted to fenced pastures, conservation lands, and state or private parks.
Similar species
Due to their immense size and unique silhouette, adult bison are unmistakable and have no truly similar species in Iowa wildlife.
Sources
Sightings on Iowa Wildlife
No sightings have been linked to this species yet.
Species text is a short compilation for this site, not an official DNR page.