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Dr. Chris travels to the Cochrane Polar Bear Habitat to treat a polar bear's injured leg. Intern vet Dr. Shannon discovers a big problem while conducting a routine hoof trim on thinhorned sheep.
Aging lynx Bizhiw is behaving abnormally due to potential kidney failure. At Alaska SeaLife Center, Dr. Whitney checks in on their rescued sea lions.
Dr. Chris must deal with reindeer bullies to keep harmony in the herd. With ice finally forming on Hudson Bay as polar bear season wraps up, the Alert team releases eight bears back into the wild.