The King Charles Spaniel – also known as the Cavalier King Charles Spaniel - is a small dog, usually weighing in at no more than twelve pounds. But these little guys have the ability to worm his way into their owners’ hearts. They tend to be happy and are most often chosen because they make excellent best friends. If you have a King Charles Spaniel who qualifies as your best friend, take a look at our King Charles Spaniel TShirt designs. You’ll find several that accurately depict this adorable breed, including the Cavalier King Charles Spaniel Collage that features puppies and an adult. For those warmer days, consider a King Charles Spaniel Tank Top in silhouette.