Tameable Polar Bears
To tame a polar bear in the MCPE you will need raw fish. This only works with raw fish. Continue to feed him with a fish, until you see a few hearts, and then you will find out that he was tamed.
Versions: 1.2.7, 1.2.6, 1.2.5, 1.2.3, 1.2.1, 1.2.0