Ask almost any pet owner whether their animal helps them feel better, and the answer is almost always yes. But a new study published this month in Frontiers in Psychology puts that intuition under a microscope — and the results are more complicated than the greeting-card version of the "pet effect" suggests.
The study and how it worked
Researchers from the Open University of the Netherlands recruited 188 dog and cat owners in the Netherlands and Belgium. Rather than relying on surveys filled out once or twice, they used ecological momentary assessment — prompting participants up to ten times per day over five consecutive days to report their current mood, stress levels, and whether they had recently interacted with their pet. That produced thousands of real-world data snapshots, capturing pet interaction as it actually happened in daily life.
The lead authors — Sanne Peeters, Nele Jacobs, Karin Hediger, Jannes Eshuis, and Mayke Janssens — then ran multilevel regression analyses to disentangle the signal from background noise, controlling for age, gender, and social context.
What they found: the mood boost is real
The clearest finding was also the most reassuring. Across both dog and cat owners, interacting with a companion animal was reliably associated with higher positive affect and lower negative affect. In plain language: spending time with your pet genuinely makes you feel better in the moment, regardless of species. That part of the popular "pet effect" holds up.
What doesn't hold up: stress buffering
Here is where the study diverges from the conventional wisdom. The research found no evidence for what scientists call the stress-buffering hypothesis — the idea that pets act as a buffer that cushions the emotional blow of stressful events. Across the sample, stressful moments did not have a smaller emotional impact on owners who had recently interacted with their pet than on those who had not.
"Findings support robust momentary emotional benefits of interacting with companion animals, but do not support stress-buffering as the mechanism underlying this association," the authors write.
The cat complication
The dog-versus-cat comparison yielded the study's most striking and counterintuitive result. When it came to negative affect — bad feelings — in the context of stress, interacting with a cat did not soften the blow. Instead, it amplified it. Cat interactions were associated with a stronger link between event-related stress and negative mood, not a weaker one.
The researchers are careful not to overstate this finding. Cats and dogs differ markedly in behavior and in how they interact with owners. Cats are generally less responsive to owner emotional states, less likely to initiate physical contact during difficult moments, and the dynamic of the human-cat relationship tends to be different in character from the human-dog bond. It is also possible that owners who are already stressed seek out their cat more, creating a pattern that looks like amplification but partly reflects the stress that prompted the interaction in the first place.
What this means for pet owners
None of this should diminish the value of life with a companion animal. The study confirms that pets make everyday moments more positive — a consistent, meaningful benefit. But it does suggest that leaning on your pet as the primary tool for managing acute stress may not work the way many people assume. The emotional gains from pet ownership appear to be real but more modest and situationally specific than popular narratives imply.
The study also adds to a growing body of evidence that not all pet interactions are equivalent, and that species, context, and the nature of the relationship all shape the outcome. Future work, the authors note, should explore whether the type of interaction — active play, passive presence, physical contact — matters as much as the interaction itself.
Sources: Frontiers in Psychology — Peeters et al. 2026 · Open University of the Netherlands