Leaving music on for your dog: the effect fades after two days
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
Leaving the radio on when you go out is a widespread habit, often justified by a famous Scottish study. That study is real, but its sequel says something far more useful — and much less marketable. Our guidance on the dog's environment is gathered in the bedding and habitat section.
Contents · 6 sections
What the first study measured
Bowman, Dowell and Evans, working with the Scottish SPCA, published a crossover experiment in a rescue centre in Physiology & Behavior in 2015, with classical music played from 10 am to 4.30 pm (see the study). During playback the dogs spent more time lying down and silent, less time standing and barking, and their heart rate variability rose — a marker of relaxation. Salivary cortisol, on the other hand, showed no consistent pattern.
The detail the coverage left out
The authors write that these effects are lost by the end of the seven-day exposure, and a sub-study over nine days places habituation as early as the second day. In other words, the playlist that soothes your dog on Monday does nothing by Wednesday.
The sequel: change genre rather than turn it up
The same team tested five genres in 2017 — soft rock, Motown, pop, reggae, classical — on 38 dogs, with six-hour playlists, one genre per day, in a randomised order (see the study). The findings, to be read together:
- Dogs lay down more whatever the genre.
- No effect on barking during the music — and they barked significantly more during the silent day that followed the five days of enrichment (z = 2.2; p < 0.05).
- Urinary cortisol to creatinine ratio was in fact higher during soft rock (t = 2.781; p < 0.01) than during baseline silence, while heart rate variability pointed towards relaxation.
- On this point the authors write plainly that their result is at odds with their previous study.
- By contrast, the changes observed held up across all five days — hence the authors' suggestion that varying auditory enrichment may limit habituation. The study includes no group kept on a single genre, so this remains an inference rather than a demonstration.
What this work does not show
It covers shelter dogs in acute distress, housed in kennels, not a dog alone in a living room: the transfer to the home is not established. The two physiological markers contradict each other from one study to the next, so it is wrong to write that "music lowers cortisol". And nothing here makes it an answer to barking, since the measured effect during playback is nil. Finally, no result justifies buying an "anti-stress" playlist or speaker: what the literature describes is precisely how fast a single source stops working.
What you can do at home
- Change the background sound rather than sticking to one station, and accept that this is comfort, not treatment.
- Address the cause when the dog is left alone: see our article on the quiet resting spot for a dog home alone.
- Do not confuse this with noise phobia, which needs a different approach — our guidance on fear of fireworks and thunderstorms.
Frequently asked questions
Which genre should I pick?
Differences between genres stay modest and the authors themselves raise individual preferences. The parameter that counts in these data is not style but variety. Find all our guides on the dog hub.
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This guide is part of Planète Pets’s Dogs universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.