Seems to harvest more wood per hit than a mammoth, but the mammoth has better weight reduction, so just get your hairy-elephant to follow your splinter-mouse. Now admire the open plain where a proud forest once stood and laugh uncomfortably.
Make sure no other Castoroides are around then bola it and shoot it with tranqs until it knocks out. Make sure you bring loads of bio toxin, because their torpor drains fast. I used this method and tamed one at level 42
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.
The way to tame these guys is to run up to one of their dams and then open it and then immediately close it (you don’t have to take anything from it, opening the dam will immediately aggravate all and any nearby beavers). Once this step has been done, you must bola the beaver (assuming only one tries to fight). I actually made a hearty mistake and bolaed the first one that came whereas I should’ve killed the second first (I was making a video, the second one got killed). Once the beaver is bolaed and separated from its mates, go behind it where it can’t hit you and hit it with a bat until you knock it out, but before doing any of these either kill jellyfish for bio-toxin for torpor (the beaver’s torpor will drain quickly) or farm a bunch of narcoberries in preparation. These guys are herbivores so you should also farm other berries besides narcoberries, or gather from the nearby forests. Keep in mind that beavers EXTREMELY slow eaters when knocked out, so patience is your weapon here.
If you met one of these guys just kill it and afterwards look for it’s dam, in the dam you will find between 200-700 wood and 100 to 700 cement paste WARNING don’t take the stuff out while they are still alive unless your a quick runner
Their saddle acts as a mobile smithy, team it up with a horse to get the ultimate travelling team. The horse saddle = a smithy and the beaver saddle = mortar and pestle so you can craft gunpowder while on horse, and then transfer that to the beaver, so you can make your grenades and such on the go.