Big, strong and shaped like a truncated pyramid with broad basis. The whole of the skull and muzzle, seen from above, must be square and well linked, without a very marked diminution of width between the base of the muzzle and the temporal bones. The facio-cranial axes are moderately divergent.
Skull: Broad, strong, profile sub-convex. The width of the skull should be equal or superior to its length. Frontal sinus accentuated. Occipital crest marked.
Stop: Slightly sloping, not very accentuated.
Nose: Black wet, big and broad.
Muzzle: Straight nasal bridge. Seen from above, the muzzle appears moderately rectangular, tapering gradually towards the nose, but still keeping an appreciable width. In no case should it be pointed.
Lips: The upper lip largely covering the lower lip; the lower lip with slack mucous membranes forms a very loose labial commissure (corner of mouth). The mucous membranes must be black.