Wild animals on the Oregon Trail?

American Bison (the American buffalo), wolves, bears (blacks, browns, and grizzlies), wild horse, wild burros, hawks, eagles, ospreys, cardinals, bluebirds, bluejays, sparrows, prairie chickens, pheasant, sage grouse, mourning doves, sea gulls, swans, geese, ducks, martens, herons, mountain lions, bobcats, lynxes, prairie dogs, foxes, coyotes, badgers, wolverines, rabbits, tortoises, skunks, ground squirrels, chipmunks, elk, deer, moose, pronghorns, bighorn sheep, Rocky Mountain goats, grasshoppers, crickets, and butterflies number among the plethora of animals that might be encountered along the Oregon Trail. Catfish and trout were found in the streams and lakes along the way, as well.