Sleeping with your dog is not inherently bad for most people. Nearly half of American adults do it, and the majority report sleeping just as well or better with their pet in bed. That said, it can cause problems for certain people, particularly those with allergies, asthma, or light sleep patterns. Whether it works for you depends on your health, your dog’s behavior, and a few practical habits.
How Common Co-Sleeping With Dogs Really Is
If you share your bed with a dog, you’re far from alone. A survey of over 2,000 U.S. adults by the American Academy of Sleep Medicine found that 46% of respondents sleep in the same bed as a pet. Younger adults are especially likely to do it: 53% of Gen Z respondents said they regularly share their bed with a pet, compared to 36% of Baby Boomers.
Of those who sleep with a pet, nearly half said they actually sleep better with their animal in bed. Only about one in five reported sleeping worse. That gap suggests most people who try it find it comfortable enough to keep doing it, though a meaningful minority does experience disrupted rest.
The Sleep Quality Tradeoff
Dogs don’t sleep the way humans do. They cycle through shorter bouts of sleep and wakefulness, and research using motion-tracking devices (actigraphy) found that dogs are active for roughly 20% of the night. During those periods of movement, their human bed partners were more than four times as likely to be awake compared to when the dog was still.
That doesn’t mean every dog will wreck your sleep. A calm, older dog that settles into one spot is a very different bed partner than a restless puppy that circles and repositions throughout the night. The size of the dog matters too. A 70-pound Labrador takes up real estate and radiates body heat, while a 10-pound terrier barely registers. If you’re a deep sleeper, you may not notice any disruption at all. If you’re a light sleeper or already dealing with insomnia, that 20% activity window could chip away at the continuous sleep your body needs.
Emotional and Stress-Related Benefits
There’s a reason so many people prefer sleeping with their dog: it genuinely feels calming. Physical closeness with a dog increases oxytocin, the hormone associated with bonding and comfort. It also lowers cortisol, the body’s primary stress hormone. These aren’t dramatic pharmaceutical-level shifts, but for people who live alone, deal with anxiety, or simply feel safer with a dog nearby, the emotional payoff can outweigh minor sleep disruptions.
For people with PTSD or nighttime anxiety, a dog’s presence can reduce hypervigilance and make it easier to fall asleep. The steady breathing and warmth of another living creature provides a kind of passive reassurance that a weighted blanket or white noise machine can’t fully replicate.
Allergies and Respiratory Concerns
This is where co-sleeping becomes genuinely problematic for some people. When a dog sleeps in your bed, you’re breathing in pet dander, along with fungal organisms that can hitch a ride on fur, for six to nine hours straight in close quarters. For someone with pet allergies or asthma, that sustained exposure can trigger symptoms that might not show up during shorter daytime contact.
If you notice a stuffy nose, itchy eyes, or worsened breathing at night but feel fine during the day, your dog’s sleeping spot could be the culprit. A HEPA air filter in the bedroom removes more than 99% of airborne dander and can make a significant difference. Washing your bedding frequently and keeping the dog off the pillows also reduces the concentration of allergens near your face. But if you have moderate to severe pet allergies, the simplest fix is keeping the dog in the same room but out of the bed, perhaps on a dog bed nearby.
Hygiene and Infection Risk
Dogs walk outside barefoot. They sniff, roll, and occasionally eat things you’d rather not think about. That means they can track bacteria, parasites, and environmental allergens directly into your sheets. The actual risk of getting sick from your dog is low for healthy adults, but it’s not zero.
A few straightforward habits minimize it. Wipe your dog’s paws before bed, especially after walks. Keep up with regular grooming, baths, and brushing. Stay current on vaccinations and flea-and-tick prevention, since parasites are the most common route for dogs to pass infections to humans. Wash your bedding weekly in hot water. These steps don’t need to be obsessive. They just need to be consistent.
People with weakened immune systems, whether from medication, chronic illness, or recent surgery, should be more cautious. For them, the low-probability risk of bacterial or parasitic transmission carries higher stakes.
Effects on Children
Parents often wonder whether letting a dog sleep near a baby or young child is safe. The concern is valid on multiple fronts: suffocation risk for infants, unpredictable dog behavior during sleep, and hygiene. Most pediatric and veterinary experts recommend keeping dogs out of cribs and beds with very young children.
On the flip side, growing up in a household with a dog may benefit a child’s developing immune system. Research from a birth cohort study found that infants in dog-keeping homes had more diverse gut bacteria in early life compared to those in pet-free homes. A richer gut microbiome in infancy is generally associated with stronger immune development. However, the researchers noted that factors like household income and breastfeeding duration may explain part of that difference, so the connection between dog exposure and immune benefits isn’t fully settled.
Making It Work (or Deciding Not To)
If you sleep with your dog and wake up feeling rested, there’s no medical reason to stop. The practice is safe for the vast majority of healthy adults with healthy, well-groomed dogs. The key questions to ask yourself are practical ones: Are you waking up more than you used to? Are your allergy symptoms worse in the morning? Is your dog’s size or restlessness affecting your partner’s sleep?
If the answer to any of those is yes, a compromise often works better than an all-or-nothing approach. A dog bed on the floor next to yours preserves the sense of closeness without the physical disruption. Keeping the dog on a blanket at the foot of the bed, rather than near your pillow, reduces allergen exposure to your airways. Some people find that letting the dog in the bedroom but not on the bed is the sweet spot.
For people who sleep better, feel calmer, and have no allergy issues, sharing the bed with a dog is one of those rare habits that feels indulgent but carries real emotional benefits with minimal downside.