The ideal is 19 inches. Expression - Steady, penetrating, and attentive. Eyes - Medium in size, set well apart, and a bit obliquely. Roundish and neither prominent nor sunken. Black or various tones of brown in color.
Darker eyes are preferred.
Haws are dark and not apparent. Ears - Set well above the line of the eye. Leather is heart shaped and thin. Except for a small opening at the back, ears are held nicely against the head. Tips should not reach below the lower jaw.