I unlocked it yesterday. I had 100 attitude with wolfs and wolbauks, spent two days during daylight submitting to the wolfs which unlocked the 'dominance' stat for your pets, got roghak at 20 likes.
then there is a chance when you approach him to catch him masturbating the wolfbauk.. not sure if you had to wait for 7 days, but the milking scene is a talk option- not a quest.