The 4th Lord Craven coursing at Ashdown Park James Seymour (1702-1752)

The picture has something of this: cavalry, mammal, seated, horse, people, equestrian, animal, two, group, motion, livestock, man, competition, mare, stallion, racehorse, farm, equine.
Perhaps it’s a painting of a group of men on horses and dogs with a dog in the foreground and a dog on the far side of the picture.