Do Norway Rats Hibernate in the Winter?

Norway rats do not hibernate. They are a year-round pest.

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Like many animals, the Norway rat prefers temperate weather over cold, harsh winters. Instead, they simply seek warmer accommodations, often ending up in homes. These nocturnal pests remain active year-round, causing significant damage to buildings, fouling stored food, and negatively impacting human health.

Damage to Homes

Norway rat breeding does slow down during colder months, but that doesn’t mean it stops altogether. A growing colony of these pests can cause serious structural damage to an infested home.

Nest Building

Ripped insulation, upholstery, and paper make perfect nesting materials for baby Norway rats.

Digging

This species is notorious for digging tunnels around home foundations that can compromise safety and stability.

Gnawing

Norway rats grind down their ever-growing teeth by chewing on floor and ceiling joists, wiring, door corners, siding, and other hard surfaces.

Rats Contaminate Food

Because Norway rats do not hibernate during winter, they need to keep foraging for food. The omnivorous pests will eat almost anything, including scraps left in garbage cans and packaged goods in pantries. They may even save leftovers for later in hollow walls, attracting insects.

Impact on the Health from Norway Rat Infestation

People can become ill following bites, scratches, or contact with these pests’ waste. Rodents are associated with the spread of bubonic plague, salmonellosis, leptospirosis, and tularemia. Since Norway rats do not hibernate, the disease, damage, and destruction they cause don’t take a break either. People with rodent infestations should seek professional pest removal services from the experts at Critter Control.

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Mary
18 September 2026
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From the very moment we reached out Critter Control requesting their help to investigate and find a solution for raccoon activities in our home, we received immediate response. Mr. Scott and his staff are very knowledgeable and professional when dealing with critters activities and how to control them. We feel better now, knowing that we are in good hands to solve this problem. Thank you Critter Control!
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Tammy Renee Walker
18 September 2026
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Scott helped me so much and even took time out to survey any trouble areas I had. He is a true asset to your company.
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Donnis Palaoro
18 September 2026
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Kole goes above and beyond what is expected of the job. It has always been a great experience when he is the one servicing the property.
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Rich Anthony
18 September 2026
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Such a great company to work with for removing unwanted critters! Such a high quality experience. Josh is a great technician and communicator.
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F. Gordon
17 September 2026
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Critter Control is made up of a tightly knit group of individuals that work very well with each other. It's no surprise that each individual at Critter Control works extremely well with the home owner. The concise and timely communication, the cordiality on the phone and in person, the effort to meet and exceed expectations is prevalent in each interaction. This is my second utilization of their services, the first being back in the late 90s for mice that made their way into our apartment. This time round it was for moles which I had a problem with last year. It turned out it was a gopher that had gained entry to the old mole's tunnels. An array of traps were set that ultimately led the critter directly into the clutches of Critter Control! I am VERY HAPPY with the entire experience, from first call to capture! A five star experience! Steve, you guys are top notch! Rob and his father Chris handled business at my location during some of the hottest days of August. Rob partnered with me in an effort to increase the chances of capture. He directed me to water the trap area so the dry dirt didn't fall in when checking/setting traps. Upon the next visit, Chris exhumed the critter and communicated his findings promptly and professionally...Confirmation that knowledge within Critter Control is concise and specific to the capture of each critter.
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Maureen Curtis
17 September 2026
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They blocked all places for raccoons and other rodents from making a bed under our deck. Excellent work was performed in a very timely manner. I highly recommend them.
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chuck topping
17 September 2026
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Jacob Johnson was excellent. He was professional, courteous and explained everything he was doing. I would definitely hire him and the company again.
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Joe Vesowate
17 September 2026
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Very responsive and knowledgeable. They took care of my Animal Control problem with minimal stress to me
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Haley Zettlemoyer
17 September 2026
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Highly recommend Critter control of Carlisle! Nate and Shaun were great! They were very professional and knowledgeable! If you have some kind of critters you need to get rid of give em a call!
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Heather
17 September 2026
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Very personable
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