Polar bear
The polar bear is the only creature on the planet that hunts for humans at will. All other animals prefer to hide and attack for self-defense purposes only. Perhaps this is due to the fact that, territorially, people and polar bears don’t intersect. The animals simply don’t realize that they need to be afraid of humans — this thought doesn’t exist in their genetic memory.
Moreover, these bears are dangerous not only on the ground, but also in the water. They are good swimmers and can reach a speed of around 6.2 mph. Comparatively speaking, we are slow. Some of the fastest human swimmers clock in around 5.3 mph, while their average speed is 2 mph.