New Dog Sleep Study: Your Dog Isn't Ruining Your Rest

If you share your bed with a dog, you have probably blamed the furry bed hog for a groggy morning at least once. A new dog sleep study says that blame may be misplaced. The research, published October 7, 2026 in the journal PLOS One, fitted 25 people and their 38 dogs with motion sensors for four weeks — and found that bed-sharing with a dog did not significantly change how long or how well the owners slept. The project was led by researchers at the University of Toronto in Canada, with colleagues at Duke University, and its results were reported by Phys.org.

That finding lands in the middle of a genuinely unsettled debate. Earlier research has pointed in opposite directions: some work has suggested that co-sleeping with pets fragments sleep, while other investigations have reported neutral or even positive effects on how rested people feel. A 2024 survey of more than 1,500 American adults, for example, found that people who room-shared with a pet reported worse sleep quality and more insomnia symptoms — and the effect was driven by dogs rather than cats, as summarized by PawTracks. The dog sleep study tries to move past self-report entirely by measuring both species at the same time.

What the dog sleep study actually measured

Rather than asking people how they slept, this dog sleep study recorded what their bodies did. Each human wore an activity monitor on the wrist, while each dog wore a matching monitor on the collar. The devices, called actigraphs, record movement continuously and let researchers infer sleep duration and nighttime waking from stretches of stillness and motion. Because the monitors ran in people's real homes instead of a sleep lab, the team captured many consecutive nights of natural behavior.

Over four weeks, the monitors built a detailed record of when each person and each dog was active or at rest. A clear pattern emerged: nighttime activity in humans and their dogs was strongly correlated, with owners and animals commonly stirring at the same times during the night. The disturbances clearly flow in both directions across the bed, but the data show the humans frequently started the nighttime motion.

What the dog sleep study found about who wakes whom

The direction of the nudges surprised even the researchers. In the majority of cases, the humans began moving before the dogs did, which suggests that owners disturb their dogs' sleep more often than the reverse. As StudyFinds reported, the linked pairs told a lopsided story: among the human-dog pairs whose movement was clearly connected, the person moved first in 45 percent of cases and the dog in only 18 percent, with the remaining 36 percent moving within the same minute — too close together to tell who started it.

Even more telling for anxious owners: participants who had more than one dog rated their own sleep as worse, but the sensor data showed no measurable gap. People routinely misjudge how well they slept, and the authors highlighted that gap directly. The authors wrote in the paper: "Our findings suggest that nighttime activity in humans and dogs is closely coupled and there may be discrepancies between objective and subjective sleep measures."

What the dog sleep study means for your bedroom rules

For readers deciding whether the dog stays or goes, the takeaway from the dog sleep study is reassuring: if you share your bed and feel guilty about the mutual tossing, the monitors suggest both of you are probably getting decent rest anyway. The nighttime dance of mutual stirring is real and measurable, but it does not appear to cost either species meaningful rest. That fits a broader pattern covered on our Life Hacks page: the biggest sleep wins usually come from basics like a consistent schedule, not from a single habit tweak — something our earlier look at what actually disrupts sleep explored in more depth.

There is a catch, and the researchers state it plainly. The sample is small — 25 people and 38 dogs — and there was no comparison group of owners who sleep without their animals, so the findings are a starting point rather than a population-level verdict. Future work needs to cover dogs of different ages and breeds, since a young puppy and a senior dog have very different nighttime profiles. The dogs in this round were huskies and malamutes tracked during the pandemic lockdown period, a detail that may also have shaped the results.

So the bedtime negotiation continues, but with new evidence on the table. The dog sleep study does not prove a dog in bed is harmless for everyone — allergies, anxiety, and genuinely restless animals are all real counterpoints the authors acknowledge. What it does suggest is that the average bed-sharing owner's rough night is probably not the dog's fault. And if the sensors are right, the creature most owed an apology for all that tossing and turning might be asleep at the foot of your bed.