These guys are a pain to tame but so worth it. They're a great replacement for traps when taming, just pick up the dino that you want to tame (if you can) hop off and shoot it, the karkinos does not drop what's in its claw when you dismount thus eliminating the need for traps for small & medium tames. They're also great for harvesting oil from trilobite, just pick one up in each claw and wack wack, easy! I can farm hundreds of oil in half an hour doing this. Also avoid fights where possible, these guys have an annoying animation they do when hit and they won't walk or jump during making it nearly impossible to get away. Ravagers are passive towards these though so you don't need to worry about them.

For knocking out you will need at least 65 boulders. I do not know the exact amount so that amount is all guess. And second always aim at their back because hitting the limbs will do massive damage and will possibly kill it. After it is knocked out you should load it with narcotics and carbo kibble, spoiled meat, or raw types of meat. Good luck!

Use a 3 by 3 and set up 3 ramps have a door and on the left and right of the ramps make the walls 2 high then across the ramps place the cannon/catapult on a roof then on the left and right of the cannon/catapult place walls and have at least 14/15 boulders or have 2/3 cannonballs

I’m a switch noob.and I swear too god,my server is haunted,I live in the hidden lake,and it keeps on saying my level 12 karkinos killed a coelacanth,I WITNESSED a coelacanth die.so I was in the lake building some pipes for a auto garden and I saw a coelacanth and then suddenly 267 damage was dealt too it and it died,there was nothing around it.conclusion is that I apperantly own a non controllable and invisible crab,and that dlcs might be coming too switch,cause there is no dlcs on switch and karkinos is aberration exclusive.