Turk, a greyhound, the property of George Lane Fox George Garrard (1760-1826)

The picture has something of this: mammal, animal, two, dog, nature, cavalry, grass, wildlife, jump, scamper, action energy, side view, people, canine.
Perhaps it’s a painting of a black and white dog standing on top of a grass covered field next to a body of water with a sky in the background.