Not intimately familiar with the breed, are you? Mine would grab a porcupine, shake it until the skin came off, and go back for another hunk. All that because he got 3 quills in the end of his nose, once. He was cool with kittens, chickens, whatever, but simply hated porcupines. Pain is meaningless to them when they attack.
A dog wouldn’t need to “feel pain” of shattered spine or a knife in its heart to be debilitated by it. Give me a fungo bat with a few nails hammered in the end and I am pretty sure I could crush the skull or shatter the spine of this breed. Especially if energized by the adrenaline of saving my one year daughter.