The Canis Pugnax, Latin for “fighting dog,” was the muscle and fury of the Roman legions. Descended from the ancient Molossian hounds of Epirus — the same breed used by Alexander the Great — these massive dogs were trained to break enemy formations and sow chaos before the infantry advanced. Equipped with spiked collars, leather armor, or even chainmail, they attacked warhorses, wrestled soldiers to the ground, and guarded camps by night. Roman historians described them as “braver than lions and