Ohio is home to approximately 350 bird species, 150 fish species and a number of mammal species. Among the fish present in Ohio are perch, trout, bass, muskellunge and walleye. Ohio is home to foxes, skunks, beavers, coyotes, wild turkeys, raccoons, groundhogs and rabbits.
Ohio's farmlands are a food source for bears, bobcats, prairie voles, muskrats, gophers, squirrels, chipmunks, mice, rats and bats. In 1988, the Ohio State General Assembly voted to confirm the white-tailed deer as the official state mammal due to the animal's particular relevance to Ohio history.
At the end of the last ice age, the white-tailed deer had significant populations concentrated in the southeastern region of what is now Ohio state. The deer population in Ohio prior to significant European settlement was stable, being moderately affected by Native American hunting and natural predation by wolves and cougars. When Europeans arrived, however, they placed a great value on deer skin, and a booming trade developed. This caused a rapid depletion of the white-tailed deer population. Eventually, this extensive hunting resulted in the Ohio government establishing hunting restrictions, which passed in 1857. Programs began in the 1920s and 1930s to boost numbers of white-tailed deer in Ohio, which involved the migration of deer from neighbouring states into Ohio.