This is a glass cabochon, hard to see but is domed, the image has been applied to the back.  Russell Terriers pack lots of personality into a compact, rectangular body standing 10 to 12 inches at the shoulder. Their dark, almond-shaped eyes and mobile V-shaped ears bring out the keenly intelligent expression—an endearing hallmark of the breed. All three coat types are mostly white with markings that are tan or black, or both. Russells move with a free, effortless gait that announces the breed’s innate confidence.