To add to the below, the only threat that a healthy adult polar bear would ever face (aside from the universal answer of humans of course) is another healthy adult polar bear. read more
Polar bear cubs are in danger from getting attacked from wolves and even other polar bears. The major enemies of the polar bears would be man. This is because the human activities like emitting greenhouse gases into the air are melting the ice which is important for the polar bears to hunt for their prey, the seals. read more
Polar Bear Enemies. Since Polar Bears find themselves at the very top of the food chain out there, they don’t have many natural predators at all. Ironically, the only one they have to fear in their natural environment is their own kind. While Polar Bears aren’t territorial when it comes to where they reside, they are extremely aggressive when it come to mating. read more
Although polar bear cubs may be prey to other arctic carnivores, such as wolves, the only animals to naturally predate on adult polar bears and cubs are other polar bears. Cannibalism among polar bears is generally a result of extreme hunger, and mothers have been known to eat their own young. read more