I remember when me and my friend thought that you tamed this thing by knocking it out with a catapult turret. We went out and crafted a raft and put a catapult turret on it. We sailed over to herbivore island, found a bronto, started pelting it with rocks. After about the 40th rock, I started to question my friend's knowledge of ark. It wasn't until about a year later when I finally tamed one, that I realized you knock them out with tranq arrows...good times.