A significant portion of American pet owners share a bed with their animals, but recent data suggests this habit may come at a cost to sleep quality. A nationally representative 2024 study published in Scientific Reports surveyed nearly 1,600 U.S. adults and found that 47.6% of pet owners co-sleep with their pets. However, these individuals reported poorer sleep quality and more severe insomnia symptoms compared to non-co-sleepers.
The negative impact on rest appears to be species-specific. The same study revealed that the decline in sleep quality was driven entirely by dog owners. Dogs, being larger and more active, tend to shift frequently, disrupting human sleep cycles. In contrast, cat owners showed no statistically significant hit to their sleep quality, likely due to cats' smaller size and indifference to human circadian rhythms.
Despite objective data indicating worse rest, subjective experiences tell a different story. Approximately 60% of co-sleepers believed sharing a bed had a positive effect on their sleep. This discrepancy highlights the complex interplay between physical disruption and psychological comfort. Research from the National Institutes of Health confirms that interaction with pets lowers blood pressure, reduces cortisol levels, and triggers oxytocin release, offering tangible mental health benefits.
Hygiene and allergy risks also play a critical role. While preventive care minimizes disease transmission, pet dander remains a common indoor allergen. For those with sensitivities, exposure can cause sneezing, congestion, and asthma flares that fragment sleep without immediate recognition. Ultimately, if you wake up rested, the companionship benefits likely outweigh the risks. However, for those experiencing unexplained fatigue or morning congestion, testing a separate sleeping arrangement may reveal the source of the issue.