What animals could kill a grizzly bear?

I can think of several animals, if dropped from a great height, that would kill a grizzly.

There’s a much smaller animal, I forget it’s name, that could probably kill a grizzly if it cared to.

I wouldn’t be so sure of that.

Chuck Norris could do it with one hand tied behind his back. And my mother-in-law, if she were still alive.

Well, if can mention Lions and Tigers, a Giraffe’s kick has been know to kill lions so it probably could do the same to a Griz.

And a hippopotamus? MIght hardly notice him as he trampled the poor Griz to death.

A Cape Buffalo would be…interesting. Get a time machine and see if the ancient Romans can set up a special Colosseum show…

I heard about that.

If it were near the water, what about a walrus? One killed a polar bear on animal face off, and we know that’s completely accurate.

There are anecdotal accounts of mustang stallions getting the best of a grizzly bear… at least to the point of the bear retreating. Not sure how a fight to the death would turn out, but I’d lay odds on the stallion.

Have you ever shot a .45 at a cinder block, or an old TV, or the like? - I have - you can’t “knock down” anything of substantial weight with the momentum from a .45 (or any other pistol) round - never mind a Grizzly Bear!

The shooter experiences the equivalent momentum (backwards) as the target does, and would be knocked over himself if it were the case.

.45? As in ACP? On a grizzly? There’s nothing special about that round and it wouldn’t be my first choice if I were expecting to get into gunfight with a big bear.

Also, “knockdown power” isn’t a thing on any kind of cartridge capable of being fired by a handheld weapon.

A rabbit wouldn’t actually kill a bear, he’d just trick the bear into disturbing a bee’s nest.

Polar Bears seem to have no problem destroying walruses so I don’t think a Grizzly would have any problem killing an Elephant Seal, in response to whoever posted that.

Proponents of the existence of Bigfoot seem to have a lot of of fun speculating on the likely winner of a one-on-one fight between their favourite creature, and a grizzly…

Bigfoot children carry grizzlies around like kittens

Adult male Grizzly 800 lbs. (and that’s a big one), adult male Elephant Seal 6,600 lbs. (and that’s an average one). Grizzly has no chance.

The wiki says Polar Bear attacks on Walruses are rare, and no sure thing for the Polar Bear. Elephant seal cows and calves may be at risk, even from their own bulls, but I doubt a Polar Bear or Grizzly will even consider an attack on a bull.

A drop bear could probably kill a grizzly, but they don’t share the same ecosystem.

So I did some checking around … and the Glock 20 came up as one of the weapons-of-choice for shooting Grizzlies. Reliability was the call here, this piece won’t be jamming up as much, with enough penetration with the 10 mm bullet …

Recommended: Ruger Hawkeye Alaskan (.375 Ruger)

I feel compelled to give a credible cite on the falsity of this assertion. I have seen a few decent-sized ratlers in Yellowstone that were not far from where I had previously seen Griz’s grazing about, fwiw.

I’d also say that a porcupine could inflict wounds that would eventually weaken/kill by indirect effects of having the ‘spines’ work their way into vital areas, rendering a griz incapable of providing for itself. Just a hunch, and I have seen plenty of porcupines in NE Idaho, practically along border of Yellowstone park. Finding rattlers in Idaho, especially along Snake River basin was not difficult as on numerous rafting outings, someone would get a hankering for cooking/eating a rattler, and off they went flipping rocks/logs over until they found one, fwiw. IIRC.

Each time I went to Yellowstone, Rangers would warn of danger of rattlers hiding along trails, etc.

Same ecosystem, right?

My last backpacking trip in grizzly country our leader (old college roomie of mine, very experienced outdoorsman) carried a .454 Casull as part of our “bear management” strategy (primary defense is being bear aware, storing food properly, etc). It’s quite the hand cannon, rounds are just a little smaller than AA batteries. On his last trip to Alaska some of the locals with experience (including a guy who had been attacked by a grizzly) opined that the .454 was “acceptable” but they recommended an even bigger whallop (S&W 500). When he was up in Hudson Bay everyone on the trip got to stand “bear watch” and they used a 12ga loaded with slugs.

I’ve seen a 1000lb grizzly at a wildlife preserve outside of Yellowstone. I am no expert on firearms but a .45 auto would feel woefully inadequate if one of those animals was charging from 20 yards away.

For those with a weak stomach there is some blood in this video,

https://www.youtube.com/watch?v=Ob_oD1IsYbE

I know this is a video of a Polar Bear killing a walrus, but I would wager if you put a Grizzly against an Elephant Seal, on the bear winning the majority of the time. Granted the Elephant Seal weighs substantially more, but the Walrus itself can weigh almost 4,000 pounds. I just don’t think the Elephant Seal on land is going to have the agile movement that a bear would have and all that weight is going to be more of a hindrance if anything while the bear is slashing its face apart with those powerful claws.