A Mare and Her Foal Basil Bradley

The picture has something of this: cavalry, mare, mammal, horse, pasture, grass, stallion, farm, hayfield, equine, foal, mane, animal, field, livestock, agriculture, grassland, rural, equestrian.
Perhaps it’s a painting of two horses next to a body of water with a tree in the foreground and another horse standing on the other side of the water.