Polar Bear

Polar bears are hostile mobs that live in mountainous or icy biomes.

Spawning
Polar bears spawn above grass or ice in snowy tundra, snowy mountains, ice spikes, regular and deep frozen ocean biomes in groups of up to two at light level 7 or higher. If there is a group, the second polar bear is a cub.

They can also spawn in frozen rivers and legacy frozen oceans in Bedrock Edition.

Drops
An adult polar bear drops one of the following when killed:

1–3 from player or tamed wolves kills.

There is a 3⁄4 chance of dropping 0 to 2 raw cod. The maximum amount can be increased by 1 per level of Looting, for a maximum of 0 to 5 with Looting III.

There is a 1⁄4 chance of dropping 0 to 2 raw salmon. The maximum amount can be increased by 1 per level of Looting, for a maximum of 0 to 5 with Looting III.

Dropped fish is always raw, unless the polar bear is on fire when killed.[verify]

Killing a baby polar bear yields no items or experience.

Behavior
Polar bears can exist in a passive or hostile state. The cubs are passive; adults are hostile.

Even when they are not provoked, they are still hostile toward the player or mob, regardless of difficulty, although in Peaceful difficulty their attacks do zero damage to players.

Attacking an adult who is within a 16×8×16 area of a cub also provokes other adults within a 21×21×21 area of the attacked adult.‌ [JE only]

Polar bears also attack foxes.

In Java Edition, adult polar bears attack any fox that stays near it for a while, hitting it once every few seconds. Cubs are more aggressive and attack foxes within 16 blocks.

In Bedrock Edition, adult polar bears attack foxes within 16 blocks. Cubs do not attack foxes.

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

Polar bears cannot breed and cubs' growth cannot be sped up.

They do not take freezing damage from powder snow.