User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4212769-20120309101156/@comment-4555457-20120322235213

the colder the environment the more body heat is required - the reason you dont see large LAND animals besides polar bears in tundra like areas is due to the amount of available food - polar bears as a species barely manage to stay alive as it is - colder environments do tend to have larger animals