The head is square with a flat, wrinkle-free top, flat cheeks and a raw, well-defined stop to the brow. The expression of the Boston Dog is alert and amiable, showing a very high level of intelligence. This is one of the important characteristics of the breed. The eyes are widely separated, large, round and dark. The eyes are located at right angles to the head and the corner of the outer eye is on the cheek line when viewed from the front. Blue eyes or eyes with traces of blue.
