FCI standard:
HEAD
CRANIAL REGION :
Skull : The skull should be flat and of moderate width gradually decreasing in width to the eyes and tapering to a wide muzzle.
Stop : Well defined but not over pronounced.
FACIAL REGION :
Nose : Black.
Muzzle : The length from the stop to the nose should be slightly shorter than from the stop to the occiput.
Lips : Tight-fitting and pigmented black.
Jaws/Teeth : Very strong, deep, wide and powerful. Strong teeth closing to a scissor bite.
Eyes : Small dark and with keen expression. MUST not be prominent and eyelids should fit closely. The eyelid rims should be pigmented black. Almond shape.
Ears : Button or dropped of good texture and great mobility.
Cheeks : The cheek muscles should be well developed.
