Itamaraca island Brazil Frans Janszoon Post (1612-1680)

The picture has something of this: cavalry, desert, cattle, mammal, livestock, landscape, people, seated, herder, camel, farm, dawn, sunset, agriculture, sepia, outdoors, man.
Perhaps it’s a painting of a group of people standing on a beach next to a body of water with a horse in the foreground and a dog.