# University of Toronto human-canine sleep study > Live situation record from CLSTR: https://clstr.news/situations/university-of-toronto-human-canine-sleep-study > Updated: 2026-10-11T09:00:00.000Z. Sources: 11. Developments: 2. Researchers at the University of Toronto conducted a four-week study using actigraphy devices to monitor the sleep patterns of 25 humans and 38 dogs, primarily Arctic breeds such as Huskies and Malamutes. The research, published in PLOS One, investigated the impact of co-sleeping on sleep duration and efficiency. The findings revealed a discrepancy between subjective perception and objective data. While many owners reported feeling that their dogs disrupted their rest, objective measurements showed no significant decline in human sleep quality or duration. Data indicated that humans are more likely to disturb their dogs than vice versa; human movements triggered canine activity in approximately 45 percent of observed instances, compared to only 18 percent caused by dogs. Additionally, the study suggested that dogs may serve as ‘zeitgebers,’ potentially helping to promote consistent sleep rituals, and noted that participants often reported increased feelings of security and calm when sleeping with their pets. ## Timeline ### 2026-10-11: University of Toronto study examines human and dog sleep patterns A University of Toronto study using activity trackers found that humans disturb their dogs' sleep more often than dogs disturb humans, and that sharing a bed does not objectively lower sleep quality. 6 sources. https://clstr.news/cluster/university-of-toronto-study-finds-humans-disturb-dogs-sleep-more-than-vice-versa ### 2026-10-08: University of Toronto study finds sleeping with dogs does not disrupt human sleep A University of Toronto study reveals that sleeping with dogs does not objectively reduce human sleep quality or duration, despite many owners subjectively perceiving more disruptions. 5 sources. https://clstr.news/cluster/university-of-toronto-study-examines-human-and-dog-sleep-dynamics --- Cite as: University of Toronto human-canine sleep study. CLSTR, https://clstr.news/situations/university-of-toronto-human-canine-sleep-study