Cute Pets! A toy miniature Aussie dog looking up with one blue eye and one brown eye. Heterochromia iridium is very common in this breed. National Dog Day is August 26 to bring attention to the plight of animals in shelters and encourage adoption and ownership of all breeds. An opportunity for all dogs to live happy, safe and abuse free lives, they all give us companionship, keep us safe, unconditional love and loyalty. A dog is man’s best friend.