The Presa Canario is a moderately large, powerfully constructed dog with a harsh-textured, flat coat. The head is massive and cuboid. Ears are set just above the line of the eye and may be cropped, naturally pendent or rose. The body of the Presa Canario is slightly longer than its height at the withers, with a broad, deep chest, but females may be slightly longer and possess somewhat less rib spring than the males. Skin is thick and elastic. The distance from the withers to the elbow is roughly equal to the distance from the elbow to the ground. The tail is very thick at the base, and tapers to a point. The tail is moderately high and reaches to the hock. The overall impression is that of an imposing, solid guard dog.

The essential characteristics of the Presa are those which enable it to drive and hold cattle, and to guard its home and family. These tasks require a powerful, agile, courageous dog with a large head and powerful jaws. The Presa is extremely affectionate, docile and well behaved with its owner and family, but is wary of strangers and aggressive with other dogs.