i was watching grizzly man & at minute 56 to bears started greco roman grappling, then one got a underhook takedown, the one on bottom had his guard but the top bear started passing & the bottom bear blocked the pass & regained guard. it was crazy !
Bears, and also cats! Cats will invert if they are forced into corner, and they play spiral guard and all sorts of sick advanced stuff! :3 And both animals will stand on their two legs sometimes when facing off. (The bears all the time I think)
I was on vacation/honeymoon on Captiva Island recently. Saw a Crane fight a Water snake to the death. The snake kept rapping its coils around the birds head/beak. After about 20 minutes of fighting off the snakes sub attempts the crane pinned it in the sand and ate its eyes.