Why Dogs Sleep More in Winter — And When to Worry

Have you noticed your dog napping more as the days get shorter? You’re not imagining it — many dogs sleep longer during winter. Just like people, they respond to seasonal changes in light and activity. My Molly is sleeping a lot more, she often gets up on the couch next to me and sleeps for a good percentage of the day.
But how do you know if your dog’s extra snoozing is normal, or a sign of something more? Such a good question because I often worry if Molly is okay with all her sleeping!
Colder weather naturally slows everything down. Dogs expend less energy outdoors and spend more time curled up in warm spots indoors.
Less daylight also means less exposure to natural sunlight, which can affect serotonin levels — the “feel-good” chemical that influences sleep and mood. So, it’s no surprise your pup may be dozing a little more than usual.
3 tips to keep your dog active this winter ❄️
Even in the colder months, regular activity helps keep your dog healthy, happy, and full of energy. #Winter #Pet #PetAdvice pic.twitter.com/Bxp3YkTLaA
— PDSA (@PDSA_HQ) November 27, 2025
For most dogs, this winter slowdown is harmless. You might notice them gravitating to sunny patches on the floor, snuggling under blankets, or sleeping later in the morning.
Providing a cozy, supportive bed in a quiet corner can help them rest comfortably and keep joints cushioned during chilly nights. I recently go this bed for Molly and she is loving it. – Dog Bed Medium Sized Dogs, Waterproof Dog Bed Orthopedic with Washable Removable Cover
However, it’s important to keep an eye on changes in their overall behavior. If your dog suddenly seems lethargic, loses interest in walks, or skips meals, it could indicate thyroid issues, joint pain, or depression.
Senior dogs in particular are prone to seasonal stiffness and may need joint supplements or gentle indoor exercise to stay limber. Make sure to be giving your doggie glucosamine joint chews for dogs!
Keep their environment warm but well-ventilated — central heating can dry out skin and cause discomfort. A humidifieror moisturizing spray can help combat dry air.
Encouraging light play and short walks, even in cold weather, will help regulate their sleep and mood. Remember, dogs mirror our energy — if you’re moving, they’re more likely to follow suit.
A little extra sleep in winter is perfectly normal, even healthy. Just keep an eye out for major shifts in appetite or energy. With warmth, care, and a good routine, your dog will sleep soundly all winter long — and wake up ready for spring adventures.
