Reaching out to stroke a pet dog does not immediately wash away the physiological tension of a difficult moment, but it can shield the human body from the toll of the next hurdle, according to a recent study published in the journal Biological Psychology.
Researchers at the University of Innsbruck in Austria set out to isolate physical touch from other pet interactions, such as eye contact and verbal communication, to measure its exact biological impact. Psychologists have long documented how supportive relationships blunt anxiety, yet scientific evidence specifically isolating animal touch has remained limited, PsyPost reported.
To investigate the question, lead author Vanessa Kaufmann, alongside researchers Annett Schirmer and Xiaoqin Cheng, monitored 64 adult dog owners and their family pets in a controlled laboratory setting. The participant group consisted of 51 women and 13 men, with an average age of 34, according to ScienceAlert.
Stressful tests and recovery breaks
Each owner underwent a taxing 10-minute trial designed to trigger social-evaluative anxiety. Participants had to solve rapid arithmetic problems by counting backward to a flashing light and answer timed general knowledge questions, all while an evaluator gave critical feedback through a video screen. Technicians measured their bodily reactions using electroencephalography, or EEG, to track electrical brain waves, along with sensors recording heart rates and heart rate variability.
Following the test, participants entered a separate room for a five-minute break. In one experimental session, dogs roamed freely so owners could stroke them spontaneously. In an alternate session, dogs were held on a short leash out of arm’s reach, allowing the owners to speak to and gaze at their pets without any direct contact. Afterward, participants completed a second round of the stress test.
When given the chance to touch their animals, participants spent roughly 64 percent of the five minutes stroking their fur, PsyPost reported. When prevented from reaching them, owners adjusted by spending roughly 53 additional seconds locking eyes with their dogs.
Delayed physical protection
Researchers initially expected that tactile contact would speed up recovery immediately after the first challenge. Instead, heart rates, brain rhythms, and self-reported moods returned toward resting baselines at similar speeds regardless of whether owners touched their dogs.
The critical difference surfaced during the second round of high-pressure testing. Participants who had petted their dogs during the break exhibited significantly muted physiological stress responses compared to their first round. Their calming alpha brain waves suffered less suppression, their heart rates stayed slower, and their heart rate variability remained higher, signaling a more balanced nervous system.
Conversely, volunteers who were barred from touching their pets showed no meaningful biological buffer when facing the second trial.
“These results indicate that touching one’s dog dampens the bodily impact of an upcoming stressor and that pet owners may naturally seek such touch when interacting with their pet,” the researchers explained in their paper, ScienceAlert reported.
Unconscious physical shifts
Curiously, participants’ conscious assessments of how stressed they felt did not match the physical readings collected by the monitors. Volunteers who petted their animals did not necessarily report feeling calmer, suggesting that the cardiovascular and neural buffering happened beneath conscious awareness.
The study authors theorized that running fingers through a pet’s coat stimulates specialized nerve fibers on the sides and backs of human fingers that react to slow, gentle motions, sending soothing signals straight to the nervous system.
Researchers emphasized that several questions remain open. The study evaluated White European owners in a laboratory setting interacting with their own familiar pets, and the authors noted that further work is necessary to see how these results translate into daily life. Scientists also cautioned that human-animal contact should remain mutual, noting that petting provides benefits only when pets are comfortable participating.
