Fila. There is nothing about this breed I don't adore. Their downright eerie intelligence, ability to reason and adapt, the scheming, stealth, athleticism, determination, strength, feline agility, the "off" switch when they morph into lounge dogs, the beautiful lion gait and stalking, their vocalizations, their intense love and loyalty, gentleness and ferocity, warped sense of humor, ego, their attention to detail, their suspicion at anything out of the ordinary, sense of drama, the fact that they could survive and even thrive without our assistance, but they CHOOSE to live with us, that they aren't completely domesticated, that they are fierce, but not savage and have the concept of "sufficient force," oh, just everything about them.