If you are going to tame one of these with no dinos, be sure to upgrade your movement speed and get tranqs. When you see it whip its tail forwards move to the right you will dodge the shots. This worked for me.

Thorny dragon can act as a turret, set tange to high, fill it up with stone so it cant move and set to aggressive. It is beaver version in desert,doesnt collect berries thoe.

Completely irrelevant but I think it looks kinda cute.

Argent can pick it up now after tlc 2

Go on a cliff and boomerang from above if low level.

Be sure and name your first Thorny Dragon "Me So Thorny." Epic.

A good thing to do for a lot of creatures is build a cage out of door frames and ramps once the creature is in just shoot it with tranq arrows or darts but the creature has to be big enough to not walk through the door frame

Plant species Y, hide behind big rocks, shocking tranq, feed regular kibble. Done.

Best at gathering wood and thatch and knocking creatures with a handy Smithy

If you have a wyvern or argy, easiest way I found to tame is to set up a taming pen, 2x4 with single door frames on the first level, walls on the second(stone), with a Dino gate on one end. Go pick up your dragon of choice and drop it in! Super easy and quick.