During the "All Ghillied Up" mission, you will come across a wild dog eating a dead soldier's remains. You will be told to leave it alone, but if you want probably the most difficult challenge in the game, shoot it. You will be attacked by a large pack of angry dogs.
In the mission when you play Cpt. Price, you will encounter a wild dog eating a man. You are told to leave it alone, but if you kill it you will hear dogs growling. You are then attacked by a large pack of them. This is the best way to practice your dog killing skills, but be warned. You must save your comrade, because if he dies you must start over again.
