they were running in a field and i managed to take an amazing cool pic of them.
found on horse trail in the state park
At least nine burros in the herd. The photos document four calves and five adults. There were tourists approaching the burros and they are advertised as the begging burros of Custer State Park in many pamphlets.
Equidae (sometimes known as the horse family) is the taxonomic family of horses and related animals, including the extant horses, donkeys, and zebras, and many other species known only from fossils. All extant species are in the genus Equus. Equidae belongs to the order Perissodactyla, which includes the extant tapirs and rhinoceros, and still more fossils.