The bear is seen in her back den area during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Soon the bear will go into a slight hibernation, or torpor and decrease her body temperature by about 10 degrees, lower her metabolism, and slow her heart rate in order to sustain energy throughout the winter months. Typically the bear will lose about 100 pounds through the winter but is able to retain most of her muscle mass. Traci Westcott / Post Bulletin

The bear is seen in her again den space throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Soon the bear will go right into a slight hibernation, or torpor and reduce her physique temperature by about 10 levels, decrease her metabolism, and sluggish her coronary heart charge in an effort to maintain power all through the winter months. Typically the bear will lose about 100 kilos by the winter however is ready to retain most of her muscle mass. Traci Westcott / Post Bulletin

A wooly winter coat is seen on the back of the bison during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. The fur will become thicker to prepare the bison for winter, allowing no body heat to escape. Traci Westcott / Post Bulletin

A wooly winter coat is seen on the again of the bison throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. The fur will change into thicker to arrange the bison for winter, permitting no physique warmth to flee. Traci Westcott / Post Bulletin

A wooly winter coat is seen on the back of grazing bison during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. The fur will become thicker to prepare the bison for winter, allowing no body heat to escape. Traci Westcott / Post Bulletin

A wooly winter coat is seen on the again of grazing bison throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. The fur will change into thicker to arrange the bison for winter, permitting no physique warmth to flee. Traci Westcott / Post Bulletin

A wooly winter coat is seen on the back of the bison during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. The fur will become thicker to prepare the bison for winter, allowing no body heat to escape. Traci Westcott / Post Bulletin

A wooly winter coat is seen on the again of the bison throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. The fur will change into thicker to arrange the bison for winter, permitting no physique warmth to flee. Traci Westcott / Post Bulletin

A wolf is seen during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Wolves have two layers of fur to keep them warm through the winter. Traci Westcott / Post Bulletin

A wolf is seen throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Wolves have two layers of fur to maintain them heat by the winter. Traci Westcott / Post Bulletin

Prairie dogs eat to put on a layer of fat for winter during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Prairie dogs don’t hibernate but will burrow to escape the elements on really cold days. Traci Westcott / Post Bulletin

Prairie canine eat to placed on a layer of fats for winter throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Prairie canine don’t hibernate however will burrow to flee the weather on actually chilly days. Traci Westcott / Post Bulletin

Prairie dogs eat to put on a layer of fat for winter during a “How Animals Prepare for Winter" program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Prairie dogs don’t hibernate but will burrow to escape the elements on really cold days. Traci Westcott / Post Bulletin

Prairie canine eat to placed on a layer of fats for winter throughout a “How Animals Prepare for Winter” program Saturday, Nov. 13, 2021, at Oxbow Park and Zollman Zoo in Byron. Prairie canine don’t hibernate however will burrow to flee the weather on actually chilly days. Traci Westcott / Post Bulletin

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