A level 2 Bronto was attacked by a dilo and the bronto hit me by accident, and my lvl 20 trike went after it, it killed me, and it killed my trike when I was dead.(I was a noob at the time). Overall: Don’t go near it while it is fighting something when you are a noob.
Do not try and take its egg i did and next you know i got chased to a cliff and then I jumped down then I got stuck in between two rocks then two seconds later I was a pancake and the egg wasn't even fertilized a like a day keeps the killer bronto away.
Easiest way to take down one of these: get a cross bow or a bow if ur not a high level 2, I recommend using tranq arrows to knock out one of these and use a melee weapon to not waste ammo and also look for a cliff that the bronto can't reach and get top of it now shoot it with tranq arrows and kill it while it's KOd might be cruel but hey, you just got yourself free prime meat or just tame it if u want
If any dino comming to kill you, go near Bronto's leg and make the dino behind u to hit bronto and run away from it. If bronto is behind you go near titanosor's leg and make bronto to hit and run u r safe. If titanosor is behind you and u have many resource Make a bed or sleeping bag while running, place it and go and stand in front of titen like said u r stronger than it, it will kill u, u respon on the bed and take back your things😀