A properly proportioned Presa is about 20% longer (measured from prosternum to point of buttocks) than tall (measured from the withers to the ground), and length of the front leg (measured from point of elbow to the ground) should approximately equal one-half of the dog’s height. Females may be slightly longer in body. The withers are slightly elevated. The back and loin are strong but without prominent musculature. The back line ascends slightly toward the croup which is just slightly higher than the withers. The croup is of medium length, wide and slightly sloping. Females normally have slightly wider croups. The loin is moderately short, muscular and deep, with moderate tuck-up. The ribs are well arched. The brisket extends to the elbow. The chest is broad and deep with well developed pectoral muscles. Ideally, the circumference of the deepest part of the chest should equal almost 1½ times the dog’s height at the withers. Serious faults: Shallow chest, croup and withers equal height, body too short, swayback, roach back. Disqualification: Croup lower than withers.