Tranq Arrows/Darts DO NOT WORK!!! To knock this out you need to use a catapult and shoot in only on it's back. If you shoot it on it's legs it will kill it.
@Stormwebb19

I understand that all the previous tips submitted were useful, but just in case it was not clear, hit the TOP OF THE CRAB, it will have a special animation if you hit it in the correct spot, and will take only a small amount of boulders to tame, even a high level. (Irrelevant with Cannons)

Jumps super high and can launch stegos ... two at a time RIP turrets lol

You can use Kark to pick up your tamed Castoroide and use it as a hatchet, that way you get half weight on the wood going into your Castoroide.

Up this if you think they should add the amount of boulders it takes to knock one down⚡️

This tame is like the Rock elemental, but do not shoot it in the head. Shoot it right in the back of it's shell. Anywhere else will kill it fast.

If you are missing with your catapult and it's dying, drag dino corpses to it and let the karkinos eat the corpses. It will heal him up a lot then try again with the same torpor you left off with.

Make sure to carry around grappling hooks
If picked you can graple the crab and it will let go

If you're carrying a tamed Doedicurus in your claw the Doedic will automatically start harvesting any stones you hover him over. Just start pumping points into your Doedic's weight because it will stop at about half of its own carry weight. I've yet to discover another tame it will work with though...

It's a Giant crab that can throw it's enemies far away

Be careful when carrying a Dino that has a tribe mate mounted on it. I was walking up a hill carrying my anky with a tribe mate on it and they went under the map and died. RIP ANKY AND SHINEHORN. Tribemate was eh anyway.

Using a cannon will ko any level crab in one hit, but will SEVERELY drop taming effeciency. If you want one quick, use cannon. If you want a high level use a catapult (the inferior siege weapon).

Knock out with catapult. Make sure to hit body to do torpor. Hitting legs damages it and doesnt knock it out. Shove rotten meat in it.

Best source of organic and chitin on abberation. Kill them with a 100+ spino or drake

The Canon Knocks 150s out in one shot to its core! Upvote so people can see.

I killed one with just a bow and movement speed back up shoot turn around and run a little turn and shoot easy way to kill plus lots of chitin and organic polymer easy just bring enough ammo

Trap it with bear trap and shoot catipults into its body to KO

Basically the new quetz. Super weight and can carry tames to harvest resources and then throw them back into the base ;)

Unless I am missing something, the Quetzal CANNOT pick up the Karkinos with their feet.

Knock theme out by firing boulders at their body. Each successful hit adds 250 torpor.