The most dangerous bear in the world is the polar bear. Polar bears are the largest bear species on earth and are known to attack and eat humans without hesitation. They have the highest fatality rate in bear attacks, and their aggressive nature makes them extremely dangerous to humans
. Grizzly bears are also considered one of the most dangerous bear species, accounting for the most human deaths among bear species
. They are known for their aggression and powerful physical attributes, making them a formidable threat in the wild
