A blue whale is bigger than a polar bear.
No. A lion is not even bigger than a brown bear or a black bear.
No, the polar bear is the largest bear.
It is possible.
Elephants.
On land, the walrus and/or bull, no question. Those large tusks from the walrus and large horns from the bull (if the bull is indeed horned) are more than enough to intimidate and/or kill a polar bear. In the sea, no body because the walrus would swim away faster than the bear could catch it, the bull would drown, and the polar bear would be left holding the bag, so to speak.
Polar bears are larger than orangutans.
No, because most polar bears are taller and heavier than grizzly bears.
No, there are a few bigger than that.
yes they are bigger than a polar bear; they overshadow a polar bear.
Gaurs outweigh a polar bear (especially a boar) by about a half ton or more.
Yes. Polar bears are bigger, more beastly, and stronger than brown bears.