Cats make a surprisingly wide range of sounds, from chirps and chatters to yowls and trills, and nearly all of them serve a specific purpose. Some are social signals directed at you, some are hardwired predatory reflexes, and a few can signal that something is wrong. Here’s what’s behind the most common “weird” noises your cat makes.
Chattering and Chirping at Prey
If your cat sits at the window and makes a rapid, stuttering jaw movement while watching birds or insects, that’s called chattering. The sound comes from your cat quickly clashing its jaws together in a rhythmic, almost mechanical way, usually with a tensely open mouth. It’s mostly voiceless, meaning the vocal cords aren’t even vibrating. Your cat is essentially clicking its teeth together in rapid fire.
Researchers aren’t entirely sure why cats do this, but it appears to be triggered by the excitement of spotting prey that’s out of reach. Some experts think it mimics the killing bite cats use on small animals, essentially a rehearsal of the neck snap they’d use if they could actually get to the bird. Others have noted the sound can resemble bird vocalizations, raising the possibility that it’s a form of vocal mimicry. Cats sometimes mix chattering with voiced sounds like tweets or tweedles, and each cat tends to have its own variation on the pattern.
Trilling: Your Cat’s Greeting Sound
Trilling is that musical, rising “brrrrrp” sound your cat makes when you walk into a room or when it wants your attention. It’s one of the friendliest sounds in a cat’s vocabulary. Mother cats use trills to communicate with their kittens, typically as a signal to follow them. When your adult cat trills at you, it’s using the same behavior: expressing excitement, affection, or an invitation to come along. Think of it as a step up from purring, a more active, engaged way of saying hello.
What’s interesting is that domestic cats vocalize differently than feral cats. Research comparing the two groups found that feral cats, who socialize mostly with other cats, actually produce a broader range of frequencies and more call types than domestic cats. Domestic cats, on the other hand, seem to have streamlined their vocal repertoire over time to communicate more effectively with humans. Many of the “weird” noises your cat directs at you are sounds it likely wouldn’t bother making if it lived in the wild.
The Midnight Yowl
Caterwauling is the loud, drawn-out wail that sounds like your cat is auditioning for a horror film. In intact (unspayed or unneutered) cats, this is almost always about mating. Female cats in heat caterwaul to attract males, and the sounds during actual mating can be intense. The male cat’s anatomy includes small barbs that cause pain during withdrawal, which triggers a loud scream from the female. This pain actually serves a biological function: it initiates the ovulation cycle.
In spayed or neutered cats, caterwauling at night can have different causes. Territorial disputes with outdoor cats, boredom, hunger, or anxiety can all trigger it. But if your older cat has started yowling at night when it never used to, pay close attention. Feline cognitive dysfunction syndrome, essentially the cat equivalent of dementia, affects roughly 50% of cats aged 15 and older, and up to 88% of cats between 16 and 19. Excessive vocalization, particularly at night, is one of the most commonly reported symptoms in the oldest cats.
In a survey of owners whose cats had cognitive dysfunction, about 40% said the nighttime vocalization seemed driven by disorientation, another 40% attributed it to attention seeking, and about 16% thought the cat was asking for food. Most owners believed multiple factors were at play. The condition is widely underdiagnosed because people tend to write off the behavior as normal aging.
How Purring Actually Works
Purring might be the most familiar cat sound, but the mechanism behind it is genuinely unusual. Researchers studying cat larynges discovered connective tissue pads, up to 4 millimeters across, embedded within the vocal folds. This tissue specialization allows cats to produce vibrations at remarkably low frequencies, between 25 and 30 hertz, without requiring active muscle contraction or nerve signals. The vocal folds can essentially vibrate passively as air flows over them during both inhaling and exhaling, which is why purring sounds continuous.
The full frequency range of a purr spans about 25 to 150 hertz, and research suggests this isn’t just a comfort sound. Frequencies in the 25 to 50 hertz range correspond to the exact range known to stimulate bone density and fracture healing. This has led researchers to theorize that purring may function as a low-energy way for cats to maintain bone and tissue health during their long periods of rest. It could help explain why cats experience fewer bone density problems than dogs despite spending so much of their lives lying still.
Cats don’t only purr when happy. They also purr when stressed, injured, or dying. If your cat is purring but also showing signs of distress, the purring may be self-soothing rather than contentment.
Sounds That Signal a Health Problem
Not all unusual noises are normal cat behavior. Some indicate a medical issue that needs attention.
Stertor is a harsh snoring sound your cat makes while awake, especially during breathing in. Cats with stertor typically also snore loudly while sleeping. It indicates something is partially blocking the airway, commonly growths in the nasal passage, narrowing of the airway behind the nose, or severe inflammation of the nasal structures. Stridor is different: a high-pitched, almost wheezy sound on inhaling that points to a problem with the larynx (voice box). Laryngeal disease is rare in cats, but when it occurs, it’s usually caused by paralysis or growths affecting the larynx.
A sudden change in your cat’s vocal habits can also be significant. If a normally quiet cat starts vocalizing frequently, or a vocal cat goes silent, something may have changed. Yowling and screaming in particular are not common pain responses in cats. Cats tend to hide pain rather than vocalize it. So if your cat is crying out or making sounds that are clearly abnormal for its personality, the pain is likely severe. Other pain indicators to watch alongside vocal changes include hiding, refusing to eat, limping, and flinching when touched.
The Meow Is Just for You
Adult cats rarely meow at each other. Kittens meow at their mothers, but as cats mature, they largely drop meowing from cat-to-cat communication. The meow you hear from your cat is a behavior it has retained and refined specifically because it works on humans. Over thousands of years of domestication, cats have essentially learned that making sounds at people gets results: food, attention, an opened door.
This is why your cat’s meow sounds different from a stray’s. Domestic cats produce vocalizations that differ from feral cats in duration, pitch, and acoustic complexity. Your cat has, in a sense, developed a personalized language tuned to your responses. Many cat owners notice that their cat has distinct meows for different requests, and they’re not imagining it. The sounds genuinely vary depending on context, and over time, both you and your cat get better at understanding each other.