They're so annoying to deal with. Those things will rip through your flesh so quickly and never seem to have the will to be tamed as I found that out of the 50 I tried knocking out(Primitive Longneck) for an "experiment", 34 died.
They are also aggressive so... Yeah.
I found that the best way to kill one is to have them trapped in bollards or spikes and have X plants shooting them. DO NOT get in melee range unless with a rex, spino, giga, or another therizino. Most of the dinos I listed(all but giga) should have relatively similar levels or you risk losing them. I also seem to find an infestation of them wherever I go.
If you find this thing RUN it took me out in two hits and completely demolished my home and murdered my raptor and my little otter cuddles please like to pay respects to my little cuddles kept me warm on the cold nights
When I was a noob I approached one of these to read the name and look it up. I approached very, very slowly to judge whether it was hostile or not. When I reached it, I was surprised, but glad that it wasn’t going to attack me. Just as I got close enough to read the name, I’m suddenly thrown back. I close the app and use the app preview thing to read the name, then look it up. I haven’t stopped kicking myself for walking up to one of the strongest hostiles in the game