There were numerous reports of tigers preying on both brown bears and Asiatic black bears, but the relationship, it seems, was not that simple; there were also reports of bears killing tigers.
In the battle of the grizzly bear vs tiger, a Siberian tiger would win a fight against a grizzly bear. The Siberian tiger is an ambush predator, and it's the only big cat that comes close to the grizzly bear in terms of size and power.
While the tiger has bigger teeth and a stronger bite, it will also take a lot of damage from the Kodiak bear. The large ursine creature would probably rear up on its hind legs, get the tiger to come close, and then bring down all its weight and power on the tiger to maul it.
However, in nature, lions, tigers and bears are not sympatric, i.e., all three don't occupy the same habitats. Lions can be found with both black rhinos and white rhinos in Africa, but not with any bear species. Tigers can be found with two species of Asian rhinos and three species of bears.
Before exploring do tigers have predators, let's discuss what they are afraid of. Elephants, especially bears, are among the large animals that tigers are terrified of. To escape from them, tigers frequently climb trees. A crocodile's razor-sharp jaw might even kill a tiger.
Bears may have the physical strength needed to take down prey, but their lack of armor, in comparison, puts them at a disadvantage in this fight. The rhino's natural armor and offensive capabilities would be too much for the grizzly bear, making it the victor of a possible battle among them.
While a Siberian tiger would be able to best a lion in a fight due to its larger size and power, it's possible that a even larger and more powerful animal could take down a tiger. The elephant is the largest land animal in the world and would win in a fight with a tiger.
Although the gorilla is strong, the fact is that it could not stop 600 pounds of charging muscle and teeth. Gorillas lack the sensory capabilities to notice a stalking tiger before it launches its fatal attack. If the two creatures met on an open field, the tiger would still have the advantage in the fight.
An elephant would win in a tiger vs elephant fight.
The tiger is undoubtedly a fierce beast, and it might stand the best chance out of all other land-dwelling animals of successfully hunting an adult elephant. Yet, the elephant's size and power are simply indomitable.
A hippo would win a fight against a polar bear.
The hippo is larger, stronger, has better offensive powers and a defense that would allow it to last longer in a battle than a polar bear.
A bear would win a fight against a lion. Bears have the advantage in just about every aspect, from size to offensive capabilities. The only time that a lion would win is if it managed to sneak up and ambush a bear, leaping onto it and biting into its head with such power that it shattered the skill.
Although a silverback gorilla is very fast, quite strong, and has a longer arm span, it is unlikely that a silverback could defeat the much larger and faster grizzly bear in a fair fight. The one advantage that a Silverback might have is the enormous strength of its muscles.
With the bear's massive body, superior muscle, surprising speed and evolutionary armory, there really isn't any way a gorilla wins the fight. Every attempt it makes would be thwarted by at least one of these factors.
Very few animals exist that can kill a large shark, and a bear is certainly not one of them. These furry animals cannot inflict a fatal wound on a shark faster than a shark can do the same.
Would it surprise you to know that an adult bear has almost no predators? Bears are large and can be quite intimidating so they don't have many enemies. Their biggest enemies are humans and each other. It's the cubs and the smaller females that have to watch out.
An elephant would beat a bear in a fight. Even though we have granted this hypothetical bear the best features of all the various species, the fact remains that they cannot do enough damage to kill an adult elephant. A fully grown bull elephant would most likely smell or hear a bear coming long before it showed up.
The strongest land animal in the world is the elephant. The typical Asian elephant has 100,000 muscles and tendons arranged along the length of the trunk, enabling it to lift almost 800 pounds. The gorilla, the strongest as well as largest primate on the planet, is at least six times stronger than the average human.
A grizzly bear would win a fight against a lion, probably with a grizzly bear breaking the lion's back or biting through its skull. The lion indeed has an advantage in terms of their skill in hunting, especially if they are attacking in a pack.
An unarmed human could not bear a grizzly bear in a fight.
Humans cannot do serious harm to a grizzly bear. It is strongly advised that you do not get near grizzly bears.
It could simply sit on the lion and call it a victory. Lion have more speed, but they are used to hunting in packs, not individually. So a lion would have trouble fighting a polar bear alone. But if there was a fight between a polar bear and a PACK of lions, well, then the lions would definitely win.