In Valiant Hearts , a new game about World War I from Ubisoft, you can pet a dog by using the touch pad on a PlayStation 4 controller. Just rub the touch pad while your dog companion is nearby and you'll pet it in the game.
PLAYSTATION 4 WINS THE NEXT-GEN BATTLE THANKS TO DOG PETTING SIMULATION!
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via destructoid http://www.destructoid.com/the-ps4-wins-the-next-gen-battle-thanks-to-dog-petting-261564.phtml