Do Beavers Hibernate?

Beavers do not hibernate in winter. The lodges they build for living, while mostly submerged, have a large dry room that is above water that serves as their den. This main room is insulated with sticks and mud, and it remains much warmer than the water or outside air. In addition, beavers build strong family ties. They mate for life, and they have one set of babies in the lodge, as well as the prior generation of babies called yearlings. All together in the den, their body heat keeps them warm enough to survive the cold season.

Beavers in Winter

Although beavers remain active in winter, they do adapt to this cold season in several important ways:

  • They build a cache of food. Beavers are herbivores and live on a diet of woody tree bark and soft vegetation, including fruit, grasses, watercress, and water lilies. Cambium, the softer tissue under the bark, is also part of their diet. During summer and fall, beavers build a cache of food on land nearby that they bring into the lodge. They even create a “food shelf” inside their lodge for small supplies of food, so they don’t need to go out for food as often.
  • Summertime overeating is a survival mechanism. Beavers take full advantage of the plentiful food of summer and fall to overeat to build up fat for winter. Beavers store about 40 to 60 percent of this extra fat in their tails as an emergency supply.
  • They are not as active. Beavers slow down a bit during winter months to help save energy and preserve their fat reserves.
  • Their fur coat is effective insulation. A beaver’s fur coat can both stop the cold from getting in and body heat from getting out because it is made up of two layers. Their upper fur is long and designed to be waterproof. This upper layer grows longer and thicker for winter. The second layer is an underfur. It is finer, and its oiliness helps keep water away from their skin. This second layer also provides extra insulation and keeps the beaver’s body heat in.

When Are Beavers a Nuisance?

Beavers are not wildlife nuisances in the traditional sense. They do not enter homes, create dens under porches, or cause house damage. Beavers are most often a nuisance in rural and farm areas where their dams can cause unwanted flooding and erosion caused by the destruction of trees whose roots hold the earth in place. They have also been known to cut corn stalks for food and as a building material for their lodge. Critter Control is prepared to help you solve any problem that arises due to beavers.

Beaver Behavior

Beavers are the largest rodents in North America. Known for their ability to take down trees with their teeth to build watertight dams, they are busy and hard-working mammals. The dams they build help reduce stream erosion and create habitats for many other animal species.

Beavers live throughout the country, with the exception of the deserts of California and Nevada, as well as parts of Utah and Arizona. Their natural habitat includes ponds, lakes, rivers, streams, marshes, and wetlands that surround these bodies of water.

Beavers are unusual and curious creatures in several ways:

  • Like all rodents, a beaver's teeth grow throughout their lives. Chomping down trees helps keep their teeth sharp and manageable.
  • Beavers regularly go from aquatic to terrestrial environments. Even though their hind feet are webbed, their front feet are built for digging and carrying sticks on land.
  • The broad, flat shape of their tail is one of their best-known features. But most people don’t realize that it is almost hairless and covered with scales. These tails have several uses: they help steer them underwater, provide balance for when they are on land, and can be slapped on the water to signal danger.
  • They have oversized lungs that allow them to stay underwater for up to 15 minutes.
  • Aside from man, they are the only animal to significantly alter their habitat.

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Customer Reviews

Kirk D.
It has been very effective at reducing the number of mice, lizard, and snake sightings. During one visit Edgar removed a rattlesnake he came across. We may see a snake maybe two to three times during the spring and summer months, but it has been far less than before.

Serivces: Wildlife & Rodent Control in San Diego
Robert B.
Full service. Excellent job of extracting raccoon, cleaning all animal waste, sanitizing, and spraying anti-parasitic substance. They closed all potential ports of entry, though the work did not match the vinyl, and it looks kind of tacky. They added blown insulation, which added a lot to the cost. They provide a one year warranty against animal intrusion, with an option to extend the warranty at the end of each one- year period. They were willing to work with me one the price. I will probably extend my warranty, and will definitely use them it the future.
Gene F.
I was really impressed by these guys. Got a call within a few hours of making an inquiry. Had a rep out to inspect the situation by the end of the week, and when they laid out the timeline they kept if not exceeded listed times.

Rob, Travis, and Jim were all professional, polite, and courteous and after months of hearing squirrels in my ceiling they are gone and the repair to my flashing looks excellent. Can't recommend these guys enough.
Bob I.

Jeff was incredibly professional and helpful. I'll use them again and would recommend them to anyone.
-Detroit, MI
Richard L.

Critter Control did a great job of evaluating our house for sites of entry after we found bats and a squirrel in our attic. They completed their work promptly and professionally.
-Seattle, WA
Kenneth H.
We heard some noise from the corner of our house. Concerned that it could be inside we called for an inspection. Jessy arrived as scheduled and conducted a complete inspection of our home. Based on a recording we made he determined we had a tree frog on our roof. I was pleased that we didn’t have any rodent in our house. And his inspection could a few spots I can tighten up around my house. I am very happy with the outcome.
-New Hampshire
Lee F.
We have a vacation home in Western Mass and haven’t been there much during the pandemic as we live and work in Atlanta, GA. On our most recent visit we noticed that we had some rodent intrusion as well as some un-welcomed wildlife who decided to make our vacation home their home.

We contacted Critter Control and Mr. Cahoon was quick to set up an appointment as we wouldn’t be in town very long. He came out and assessed our issues. He informed us of our options to both eradicate and control future intrusions. Keeping in mind that wildlife is wildlife! He quickly got to work eradicating the rodents and wildlife from our home and addressing the intrusion issues. We feel much better leaving our vacation home for periods at a time knowing that Mr. Cahoon and Critter Control did their job and did it right! Thanks again!
Mary L.
We bought an old cabin last spring , it was used for years as a summer vacation cabin, therefore maintenance wasn’t a priority. After our project to remodel started, we found evidence of mice droppings.

We immediately called Critter Control and they came and gave us a reasonable estimate to remove all remnants and insulation. They sanitized and replaced with new insulation and sealing up points of entry .

Seeing their professional work made us feel confident and secure that the problem was solved ! Everyone we worked with continued to show professional and respectful work. Highly recommend this company! We continue to use critter control monthly to be sure we are mice and bug free!


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