I can't think of anything, hit well - including bears, that has lasted very long. I don't include critters that paint the countryside as necessarily hit well however. Some animals do seem to be able to survive by pumping adrenaline fumes through their veins if your don't hit the drains too hard to begin with. FWIW, more than a few bears don't get hit well initially which is partly why they have a reputation for toughness, I believe.

Sometimes, the air you 'let in'matters less than the air you 'let out'.