For Ark Mobile;

-If you want a passive wood supply, don’t tame them. Just let them be and they’ll build a dam (just make sure to pull out all the needed resources like wood, rare flowers, silica pearl, Cementing Paste,etc) so that they can make another dam. But a tamed Castoroide, just put them on wonder and carry them with an Argy and get close to a tree (recommend to level up melee and also weight on your Castoroides). It’s like having a Doedic but it gathers wood :) Hope this helps.

—From a friendly survivor to another.

since nobody knows how to build a very good taming pen for creatures like these or theri heres mine:

just take a 3x3 stone foundation (total 9) and get 36 doorways

and place them to make a cube on the foundations

and finish up placing stone floor doing a circle on the doorways

and boom you have got an awesome taming pen where even therizinos cant escape

How to VERY easily tame Beavers (or any medium dinos with high torpor) on single player :

Step 1: Build a 4x4 trap with 2 high walls built with door frames (add ramps on one side if you don’t have an argy)

Step 2: Carry one with an argy or lure it into the trap with aggro if you don’t have an argy

Step 3: Leave it there but don’t go out too far so it won’t despawn, wait for night, put sleeping bag down and sleep for 4 hours. This step is to drain it’s food.

Step 4: Knock it out with tranqs and feed it berries or carrots (you can get plenty with a trike or stego, if not then parasaur is also good)

Step 5: Enjoy having a beaver then cry that you need to be level 61 to make a saddle for it…

Pros: Insanely fast starve tame method, doesn’t use any narcs of any kind for a level 145, doesn’t reduce much taming efficiency like the old starve tame method where you have to knock it out THEN let it starve, almost always gets 80-90% taming effectiveness.

Cons: Have to be in the area for a long while so it won’t despawn and wait for night time, it eats a lot and if you don’t check on it, it will eat everything you put in if you wanted to save stuff like crops or prime meats, you have to trap it for it to starve so will cost a lot of building mats to start.

- Erizo, your fellow ARK newbie

If you are planning on making Behemoth Stone Dino Gates, GET ONE OF THESE. Their saddle turns them into a portable smithy so you can craft the gates. Their weight reduction of stone and wood will allow you to hold the the 900 of each that you'll need. Tame one of these suckers and put all skill points into weight. Your other option is an argy but they don't reduce wood.