With the new updates, this creature no longer harvests obsidian.
Doedicurus
The Doedicurus is an armored, armadillo-like herbivore prized for gathering and carrying stone. When threatened, it curls into a remarkably well-protected ball.

Player-written tips for taming, using, and fighting the Doedicurus in ARK: Survival Ascended & Evolved.
Don't use a taming pen as it makes headshots near impossible. Drop it near your base and backpedal while shooting darts into its face.
They can roll and when they roll they are fun to roll down mountains they can move faster than a theri running and chalico so they are fast when Rollin the world must know they can roll!
Shockingly this creature swims well, very well. One could even level stamina health and dmg to use in pvp as a glorified submarine
5 of them each 2k-4k hp can take down an alpha rex 32k hp
The easiest way to hunger an animal is by sleeping it out. Capture and wait till night,sleep than tranq it.This apply in mobile I'm not sure for pc or console. Good luck.
You can get it to go Sonic the hedgehog with the left trigger while riding one of these. Useful to escape predators while getting stone.
Just a quick tip, dont get a high level one of these or an anky when using em for harvesting. Instead breed you an Argy specializing in weight and fly the doe/anky around to the stone/metal spots. Gather manually via doe/anky
You can actually get these to charge by left swipe on mobile.
I have found that a few spawn in consistent at the Red Wood Forest.
Use a slingshot walk backwards and shoot it u will need about 40 stones its a simple tame
To tame these guys easy enough. Use an argie to throw them in a tame trap using door frames and maybe a Dino door. Then shoot them with tranq darts and longneck rifle.
Surprisingly enough they’re amazing swimmers. Faster in the water then on land, they have no trouble taking on a megalodon (mobile)
This dude can harvest stone like it’s nothing. Seriously this thing saved so much of my time and effort on building a big stone base.
When harmed, it will swing its spiky tail at whomever is attacking it. If the Doedicurus is harmed more than it could take, it will curl into a hard ball made of keratin, which is used to protect itself and fend off enemies. It will also, when tamed, roll through its enemies as…
When harmed, it will swing its spiky tail at whomever is attacking it. If the Doedicurus is harmed more than it could take, it will curl into a hard ball made of keratin, which is used to protect itself and fend off enemies. It will also, when tamed, roll through its enemies as another special attack. They are also great when you are in need of lots of stone 👍.
On Ragnarok, I have seen them mostly in the black volcanic zone. There are a lot of dangerous animals that you should keep a distance with. Mostly mantis, Spider, and centipedes. I have seen rexes, carnos, and raptor there too.
If the Deodic balls up when tranqing it, stop. The tranqs will not work while its balled up.
In Valg. U can tame these when lvl 9, with boomerang. ( you have to spawn in chalk hills tho )
I managed to tame a low level one with tranq arrows + Crossbow. I shot his head a few times then I tried shooting at his feet. When he went down he had half health.
Pretty slow so just walk back and if they get close enough to atk U will already be out of their range and aim for head (if it's a low lvl U might have to use tranq darts)