Whine~!
Mark looked toward where he could see the Cerberus standing while cradling its paw gently. Mark noticed that there was something wrong when the Cerberus hit those rock formations. Usually, something that is capable of killing Mark in one strike should not be feeling hurt by simply slamming into a few rocks. Mark could have taken the hits from those rocks easily and he would not have felt a single thing.
But the Cerberus released a whine after it struck the wall and that meant that it felt some pain from it. That made Mark immediately realize that the Cerberus was not just a powerhouse that was capable of killing him in one strike. The Cerberus had a high offense, but its defense was shit!