title: Black bears and polar bears--still metabolic marvels.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D002335:Carnivora / Q000378:metabolism*; D003081:Cold Climate; D005260:Female; D006605:Hibernation; D008297:Male; D011247:Pregnancy; D001503:Ursidae / Q000378:metabolism*