"Special animal" playlists are multiplying on streaming platforms, ranging from classical pieces to instrumental soundscapes. This phenomenon is based on a simple idea: if music has an impact on our emotions, it could also influence those of animals. Several studies are now beginning to explore this avenue, and some of them are delivering compelling results.
In homes and shelters alike, many stressed dogs calm down more when they hear slow compositions without pronounced percussion. Experts in psychoacoustics and veterinary neurologists have observed dozens of dogs in different contexts. The result: a large majority showed fewer signs of anxiety - less panting, less trembling, less nervous movement - when the music played was simple, gentle and mostly piano-based.
Why do certain pieces relax animals so much?
Studies conducted on dogs show that pieces with a slow tempo (50 to 60 beats per minute) and without percussion are the most effective. This type of music helps reduce cortisol levels, the stress hormone, even though the exact mechanisms remain difficult to explain. According to several researchers, these pieces would simply encourage a calm mental state, rather like in humans.
Other species also respond to classical compositions. In zoos, elephants and gorillas exposed to this type of music have shown fewer repetitive or aggressive behaviours. Their sleep, appetite and even immune system appeared to benefit as well. This shows that musical sensitivity extends far beyond the domestic dog.
And what about cats?
Their hearing, even more acute than that of dogs - cats can perceive up to 79,000 Hz - makes certain everyday sounds anxiety-inducing. Studies on this subject remain rare, but one of them highlighted a notable reaction: cats exposed in turn to several pieces showed more marked signs of relaxation (reduced heart and respiratory rate) when they heard classical music rather than pop or rock tracks.
Other work, carried out in veterinary settings, shows that certain gentle instrumental music (piano, strings, flute) also reduces their respiratory rate. Conversely, extreme variations in frequency and loud percussion tend to stimulate them rather than soothe them.
How do you choose the right music for your pet?
Despite the general enthusiasm, researchers point out that not all classical music is equal. Sub-genres, instruments and tempo strongly influence the effect achieved. It was this observation that prompted certain sound behaviour specialists to create compositions specifically designed for dogs, cats or even horses, by removing overly stimulating frequencies and adapting the harmonies to match their hearing capabilities.
In practice, several approaches coexist: scientifically designed series such as Through a Dog's Ear, specialist catalogues such as Pet Acoustics, or simply a playlist of classical pieces with a slow tempo. Each animal reacts differently: finding the right atmosphere often requires a few attempts, but when it works, the effect can be spectacular.
