Os, Pieter Gerardus van – Landschap met herders en vee, 1820 Rijksmuseum: part 2

The picture has something of this: mammal, outdoors, cattle, livestock, pastoral, landscape, grass, agriculture, water, cow, countryside, pasture, grassland, daylight, sky, nature, rural, summer.
Perhaps it’s a painting of a man standing in a field with a herd of cattle next to a river and a man with a dog standing.