"Every fighter that ever lived had fear. A boy comes to me and tells me that he’s not afraid, if I believed him I’d say he’s a liar or there’s something wrong with him. I’d send him to a doctor to find out what the hell’s the matter with him, because this is not a normal reaction. The fighter that’s gone into the ring and hasn’t experienced fear is either a liar or a psychopath…" (Cus D’Amato, legendary boxing trainer) In dogs, is courage a function of absence of fear? Are there fearless breeds and if so, are those basically bred psychotic? Can a dog be more courageous with or without fear? Are there fundamental differences to human emotions? For humans we often say that the difference between a hero and a coward is that they both have fear, but the hero acts despite it whereas the coward freezes and runs. Is it similar for dogs, or a whole different game altogether. I'd like to hear opinions.