How can you make a Cane Corso aggressive?

The owner can leash the Cane Corso and have a friend pretend to hit them; if it barks at the friend, the friend flees in fear and the owner rewards the dog to reinforce the behavior. But as a guard dog it already has strong protective instincts, and making it ‘aggressive’ is not a good training goal—it can become dangerously aggressive and threaten people and animals. Instead, encourage and train it to be gentle, stable and obedient, learning when to protect and when to relax.