Study Finds Bed-Sharing With Dogs Did Not Measurably Reduce Human Sleep Quality

On October 7, 2026, researchers from the University of Toronto published a study in PLOS One indicating that bed-sharing with a dog did not significantly reduce measured human sleep duration or efficiency.

The Core Finding on Pet Ownership and Rest

The researchers monitored 25 adults and 38 dogs for approximately four weeks. They used wrist monitors for the people and collar monitors for the animals. Over the course of 777 observed human nights, the data showed no significant negative effect from dogs sharing the bed. The primary conclusion of this research is that sleeping near a dog does not automatically degrade human rest.

The human participants averaged 6.23 hours of sleep per night. Their average sleep efficiency was measured at 79.31 percent. They also recorded an average score of 6.84 on the self-reported Pittsburgh Sleep Quality Index. Having a dog in the bed did not meaningfully alter these measured metrics.

This offers reassurance for pet owners who worry that their animals are ruining their recovery. The study was conducted in Ontario during COVID-19 restrictions. The animals involved were specifically huskies and malamutes. These details represent a very specific sample group.

The authors noted that these narrow parameters limit how broadly the results can be applied. The researchers gathered human sleep estimates using a tri-axial activity-monitor setup. The authors noted this specific setup had not been validated for human sleep quantification in the same way as another device mode. These activity monitors simply record motion over time.

They cannot identify specific causes of movement in the room. A spike in activity could mean a person is tossing and turning. It could also simply mean someone left the room for a moment. This limitation makes it hard to pinpoint exact sources of nighttime awakenings.

The monitors captured instances when both the person and the dog moved. Out of 22 observed cases with a detected activity peak, human movement came first in 10 instances. Dog movement happened first in four cases. Activity occurred in the exact same one-minute interval eight times.

The study concluded that humans and dogs certainly affect each other at night. The sequence of activity did not establish a definitive direction of disturbance. The devices used on the dogs had not been validated for classifying true canine sleep states. The researchers relied purely on motion data to gauge animal rest.

This PLOS One publication joins a complicated history of research into pets and sleep. Previous studies have not yielded a single consistent answer. NBC News reported that a 2023 study linked pet ownership with poorer sleep. A 2017 Mayo Clinic study presented a different view.

That Mayo Clinic research found that people slept better with a dog nearby. That specific benefit disappeared when the dog was actually on the bed. A different 2020 study suggested another angle completely. NBC News noted that this earlier research found dogs influenced human movement more than humans influenced dog movement.

The new University of Toronto data contrasts with that 2020 conclusion. By using simultaneous activity tracking, the 2026 study captured a more nuanced picture of nighttime movement. The authors were careful to measure their conclusions. They stated that no measurable reduction occurred in their specific sample.

This should not be treated as absolute proof that bed-sharing never disturbs sleep. The study was observational and involved a small group of adults. It relied on activity monitors that cannot identify specific causes of movement like outside noise. The findings add valuable data without settling the debate for every possible household.

Expert Perspectives on Routine and Perception

The study revealed an interesting gap between human perception and wearable data. Some participants felt they slept poorly even when the devices showed no measurable decline. Study co-author Lavania Nagendran told NBC News that some participants who slept with multiple dogs reported poorer sleep. She pointed out that this subjective difference was not reflected in the device data.

Having more than one dog was associated with these poorer self-reports. The paper noted that the overall subjective-sleep model was not statistically significant compared with a baseline model. Adults trying to improve their recovery often face similar confusing feedback. You might wake up feeling exhausted while your wearable device reports a perfect night.

Understanding how to interpret wearable sleep data without obsessing over the numbers is critical. Wearables capture movement well but do not always reflect how restorative a night feels. Sleep medicine expert W. Christopher Winter provided additional thoughts to NBC News. Winter was not involved in the University of Toronto study.

He described dogs as zeitgebers which act as cues to help structure daily routines. These cues can anchor habits for eating, walking, and going to bed. He noted that regularity in sleep habits can matter deeply. Winter's comments offer an expert interpretation of pet ownership.

His specific concept of routine-building was not tested in this activity-tracker study. The PLOS One research did not evaluate whether a dog's daily schedule improves human recovery. It simply measured nighttime movement patterns. Still, establishing a fixed morning rhythm is a known method for building natural evening tiredness.

Consistency Beats Intensity

The most practical takeaway for adults is to treat this study as reassurance against strict rules. You do not need to banish your dog from the bedroom simply because of a general health warning. The research found no population-level disadvantage from bed-sharing in this sample. You should prioritize your individual experience over broad population trends.

If a dog's presence seems to coincide with low daytime energy, you can try a different arrangement. Move the dog to another spot in the room for a few nights. Compare how you feel in the mornings. This approach uses practical self-observation rather than rigid clinical directives.

It helps you manage your rest without turning recovery into a stressful project. Adults often notice that their sleep becomes more sensitive to environmental changes in midlife. Adapting to age-related sleep changes requires a flexible mindset. A dog moving around might not register as a major disturbance on a tracker.

It can still briefly pull a light sleeper out of deep rest. The University of Toronto authors noted that activity timing does not prove who caused a disturbance. You might actually be waking up from stress and disturbing the dog in the process. Look at your entire evening routine to find the real source of the problem.

Managing a persistent mental load is often more important than changing your bedroom layout. You can start by reviewing how you manage evening commitments and workload. Relying on how you actually feel the next day is the best metric. Trackers provide useful data but cannot measure your actual daytime fatigue.

If your current pet arrangement leaves you feeling restored, there is no verified medical reason to change it. Consistency in your schedule will likely yield better results than forcing an unwanted bedroom change.

Looking Ahead

This research highlights the complex relationship between our environments and our actual rest. As we gather more simultaneous data on humans and their surroundings, our understanding of awakenings will continue to evolve. Will future studies show that the emotional comfort of a pet outweighs the physical disturbances of their movement during midlife recovery?

How Relaxopia helps

Processing new activity tracker data about pet bed-sharing requires looking past the initial headlines. Addressing low daytime energy and inconsistent recovery is often challenging for adults, and Relaxopia provides support by translating credible evidence into clear, practical guidance. We help you establish manageable resting habits that fit your actual daily life without relying on confusing wellness trends. Explore Resources

Sources

1. The secret to a good night’s rest? Let sleeping dogs lie ... next to you
2. Lie down with dogs, wake up refreshed? That’s what a new study suggests.