There were seven training wolves, and Vaughn didn't hesitate to attack Adrian and Vivienne. If the Alpha pup got hurt, they could just claim that the pups had started the fight. Vaughn swung down at the Alpha pup, while his six brothers spread out to follow up his attack. Pecking orders existed in the pack, and these children of the Alphas needed to find their place in it.
It's just that… Adrian didn't find it odd to grow his own claws and even jump at Vaughn to swing down. It only took Dylan one blast to blow away the rest of the training wolves. Megan only started cheering at the side, holding her chicken as if having Ansel witness the fight.