thoroughbred horse - darkest brown coat with black mane, black tail (millbury sutton, ma)

45-55 animal belongs black bovine brown cattle coat creature darkest domesticated eohippus equidae equus evolved extant family ferus foal grass grassland grazing halter herbivorous herd hoofed horse large mammal mane mare meadow millbury million multi one pasture prairie single small stallion subspecies sutton tail taxonomic thoroughbred today toed two wildlife years