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

If taming, watch the torpor rate EVERY SECOND and use Bio Toxin. Torpor drain rate RIVALS even the Therizinos’. Pro taming tip. Only use bio toxin when taming. Tame stuff with narcs ONLY when you have a narcoberry farm, and a crap ton of meat on your carnivorous tames. I only use narcotics for crafting tranq darts and tranq arrows. There are a crap ton of Cnidaria on South Zone 3.

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

It is carryable by the Argy. Upvote so others don't make the mistake of thinking they have to have a quetzal to carry a beaver.