How long do bears hibernate for?

4-7 months
Hibernation can last anywhere from 4-7 months, triggered by seasonal food shortages, cold temperatures and snow cover. When the going gets tough, the tough get… sleepy. Time spent hibernating depends on environmental conditions and the sex and reproductive status of a bear.

Do bears sleep for 6 months during hibernation?

A) Bears hibernate during winter, but aren’t sleeping the whole time. Hibernation for bears simply means they don’t need to eat or drink, and rarely urinate or defecate (or not at all). There is strong evolutionary pressure for bears to stay in their dens during winter, if there is little or no food available.

What time of the year do grizzly bears hibernate?

Depending on snowfall, temperature and food supply, bears get ready for winter hibernation in late November. The denning period in Yellowstone National Park is approximately 5 months. Grizzly bears and black bears generally do not eat, drink, defecate, or urinate during hibernation.

Do male black bears hibernate?

Do Black Bears Hibernate? Black bears are not true hibernators. Instead, they experience what is often called denning, ursid hibernation or carnivore lethargy. This period of reduced activity occurs in all black bear populations.

What happens to bears when they hibernate?

Hibernating bears enter a shallow torpor with a decrease in body temperature of only 10 degrees. It’s metabolism and hear rate slows down. But it doesn’t need to eat, drink or pass waste. In order to survive, fat in the bear’s body breaks down into water and calories for the body to use.

Is hibernation like a coma?

Hibernation is defined as a sustained period of a body temperature, metabolism, and breathing rate drop. It is essentially a coma-like state that can’t be woken up from easily.

When do bears wake up from hibernation?

When spring arrives and the snow begins to melt, bears start to wake up after months of hibernation. It is an exciting time of the year for bears and park visitors. When bears emerge from their dens, understandably hungry, they immediately begin to search for food.

What do bears do when they hibernate?


  • Chipmunks
  • Skunks
  • Snakes
  • Groundhogs
  • Bees
  • How and when do bears hibernate?

    Stay alert at dawn and dusk,when bears are more active

  • Go with a group,if possible
  • Make noise as you travel through dense cover
  • Stay away from animal carcasses
  • Store food,trash and scented items (such as sunscreen) in airtight plastic bags
  • Keep kids in the center of the group
  • What happens when a bear hibernates?

    Thyroid – gland that controls metabolism and activity levels

  • Melatonin – hormone that controls the growth of winter coats
  • Pituitary – gland that controls fat buildup,heart rate and breathing rate,as well as metabolic functions
  • Insulin – hormone that regulates the amount of glucose (sugar) needed by the animal