How come you don't have to be afraid of Polar Bears in Antarctica?

How do animals survive living in Antarctica? Which animal can you find the most of in Antarctica? What's the most ferocious animal in Antarctica besides the Killer Whale? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.