This thing should be in the swamps the stego to

I'm fine with giant beaver but I'm so glad there are no giant skunks I would have went out unconscious like 5000 times

Don't tame these. Instead tame a mammoth they are better than thes beavers. Mammoths have higher weight reduction on wood, have higher weight, are fast swimmer, are stronger, are also faster and mammoth saddle costs lesser.