My friend and I tamed a brontesaurs level 2 the we saw a level 8 close we started to tranq the level 8 one and our brontesaurs started to attack it we were terrified since my friend only joined my world to help me and i ran out of arrows then my friend died so I had to just watch the two brontesaursas battle it out while my friend attempted to collect thier stuff they got their crossbow and tranq arrows and shot at the level 8 again while they were still fighting then the level 8 fell to the ground and our brontesaurs was at very low health now we have two giant beasts.