This dog looks very like my friend's collie-cross. He adopts this pose whenever he realises that the ball is not going to be thrown for the 1001st time, however eagerly he asks. He believes life has no purpose or meaning unless someone is throwing him a ball.
Painted using a range of mixed blacks, especially ultramarine and burnt sienna (makes a nice, warm black), with cad yellow deep being the primary colour note in the floor, wall and dog's eyebrows.
Original reference photo by AinslieG Artistry.