What kinda of animals once lives on the prairies in the millions in North America?

Millions of bison once roamed the North American prairies, forming vast herds that were central to the ecosystem and the cultures of Indigenous peoples. Other animals, such as prairie dogs, coyotes, and various bird species like the meadowlark and the American kestrel, also thrived in this habitat. Additionally, larger predators like wolves and cougars were present, helping to maintain the ecological balance. The rich biodiversity of the prairies was integral to the health of the region before significant human intervention.