How to tame a castoroides, easy! As long as you have an argie.
Step 1: Find the beaver on your argie.
Step 2: Pick up said beaver.
Step 3: Make a trap, any mats. One foundation, and four doorframes.
Step 4: Drop beaver in. (Note: Might be a bit difficult to get the beaver in.)
Step 5: Tranq the beaver. (Oh and make sure you have berries. Lots of berries.)
Now, use your preferred taming method, and there you go!

If you want the stuff from their dams...don't tame them cause they won't build any more dams! Like so everyone can see :D

Be warned!! I’ve seen 2-3 of these take on a Spino and kill it!

Snatch one of these things with an argy and take it far far away from the rest of the beavers, knock it and tame
It and then massacre the rest of its family and take the wood and cementing paste from the dam 🤗

Just bola it and and knock it out and feed it carrots .berries take a long time and make sure you have loads and loads of narkotics or narcoberries the torpor goes very fast

Do not leave unattended the torpor goes down at a monsterous rate

Can you breed them on ark mobile. I’m trying but I don’t think it’s working

They love to share stuff from their dams. Go ahead and help yourself

Taming these takes so ‘dam’ long

Strong as hell, especially in packs. Don't put such nice things in your dam if you don't want me to raid it. Jerks.