Description Polar bears are one of the Arctic's most fearsome predators and one of its most endangered animals. Their huge size, blubber, and thick fur allow them to survive in their cold environment, while their sharp sense of smell means they can sniff out their dinner from a long distance. Full of vibrant photographs and fun facts, this simple narrative examines how the polar bear's life cycle, body structure, and behaviors have adapted to its challenging environment and shrinking habitat. A final activity asks readers to use what they've learned about polar bears to create an Arctic food web.