How harsh was the window light? Did you have to diffuse it in any way? Keeping the dog in position must have been a challenge. Love the catch light in his eye.
Had to go back and look at my RAW data. The light was fairly harsh on the side toward the window so I metered it from there and let the dark side be very dark.
1/200s @ f/5.6 ISO 1600 the focal length was 55 millimeters