[SpookyZalost]

"Polar bears are found in ice plains, ice mountains and ice spikes biomes, in groups of up to two. If there is a group of two there is always only one parent, and the other one is a cub."

"Polar bears can exist in a passive, neutral, or hostile state. The cubs are passive; adults are neutral, but they will become hostile if attacked. They will also become hostile towards you if you get too close to their cubs. If a cub is attacked, all adults within a 41×21×41 cuboid will become hostile towards the attacker, regardless of difficulty (although in peaceful difficulty, their attacks will do zero damage to players). Attacking an adult who is within a 16×8×16 cuboid of a cub will also provoke other adults within a 21×21×21 cuboid of the attacked adult. Polar bears can be accidentally provoked by other mobs.

Polar bears attack by rearing on their back legs and then mauling down on the attacker with their front paws. Their swimming speed is faster than the player's, making them difficult to get away from if they are attacking.

Polar bear cubs' growth cannot be sped up."