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When and How Do Brown Bears Hibernate? - World Deer
Drivers of hibernation in the brown bear - Frontiers in Zoology
Bear Hibernation: The Science Behind Their Long Winter Sleep
Unveiling the Fascinating Alaskan Brown Bear Life Cycle
5 Stages of Activity and Hibernation - North American Bear Center
Brown Bears - Bears (U.S. National Park Service)
the brown bear: torpor or hibernation? - Four Paws
Drivers of hibernation in the brown bear - ResearchGate
Denning in brown bears - PMC - National Center for …
Bear Hibernation: Facts and Myths from the Den | Outdoor Life