Dr. Syntax, a Bay Racehorse, Standing in a Coastal Landscape, an Estuary Beyond James Ward (1769-1859)

The picture has something of this: cavalry, mare, horse, mammal, stallion, mane, equine, farm, animal, seated, mustang, foal, equestrian, livestock, chestnut, colt, two, racehorse, freedom.
Perhaps it’s a painting of a brown horse standing on top of a dry grass field next to a body of water and a sky with clouds in the background.