Think of what you just said. Elephant sized. A Tiger, as ferocious as it is, even an Elephant sized mouse would destroy it.
a polar bear will most likely win in a fight against a grizzly bear
This fight would never happen, no matter how you look at it.
Hard to say in a real fight, both are large powerful bears, but in interactions between the two species, brown/grizzlies seem to dominate the polar bears.
A polar bear would totally lose because a rhino would charge at the polar bear and knock it with its horn.
I don't know if such a fight has ever happened or ever will, but my guess is that the polar bear would win. Both animals are very strong, but the polar bear has bigger claws and teeth.
A polar bear would win the fight on land if it clawed the crocodile's head and flipped its body to claw its stomach. In water, the crocodile would definitely win the fight.
It depends on the health and size of the two animals, and the position of where are they attacking. If the ox struck the polar bear with its head or knocked its chest, the ox would win the fight. If the polar bear swiped and clawed the ox to death, the ox would be a meal of the polar bear.
Polar bear.
polar bear
Depends on the size, age, sex and "experience" of either species.
Probably a polar bear. They could just overpower a wolf. If it was like five wolves then maybe they could win.
The females fight for the land and the males fight to impress the females.