The hardest and most important thing to bring into your dog portraits goes beyond simply creating a likeness in appearance. You need to train yourself to look for unique traits that will bring out the dog’s personality to the owner. Using the breed can be useful here too, as you become more used to finding that special feature in your subjects. While painting a beagle, for instance, you may spend more time on the dog’s eyes because the breed is known for its rich, hazel eyes that...