A cat’s meow can change for reasons ranging from a simple respiratory infection to an overactive thyroid gland or age-related cognitive decline. The shift might sound like hoarseness, a raspier tone, increased volume, or a completely different pitch than what you’re used to. Some changes resolve on their own within days, while others signal a condition that needs veterinary attention. Understanding the most likely causes can help you figure out which category your cat falls into.
Upper Respiratory Infections
The most common and least worrying reason for a changed meow is an upper respiratory infection, essentially the cat version of a cold. The upper respiratory tract includes the nasal passages, sinuses, oral cavity, the back of the throat, and the vocal folds. When infection causes swelling in the larynx (where the vocal folds sit), your cat’s meow can become hoarse, squeaky, or nearly silent.
Other symptoms usually appear alongside the voice change: sneezing, discharge from the eyes or nose, coughing, mouth ulcers, lethargy, or loss of appetite. Cats with a URI may also breathe noisily or snore. If you’re noticing several of these signs together, an infection is the most likely explanation. Most URIs clear up within one to three weeks, though some cats need supportive care or antibiotics if a bacterial infection develops on top of the initial viral one.
Overactive Thyroid
Hyperthyroidism is one of the most common hormonal disorders in older cats, caused by overproduction of thyroid hormone. It doesn’t just change the sound of the meow; it typically makes cats vocalize more often and more loudly. The excess thyroid hormone ramps up metabolism and nervous system activity, which is why affected cats often seem restless, hyperactive, or unusually demanding.
The classic pattern is a middle-aged or senior cat that has started meowing more, eating ravenously, and losing weight despite the increased appetite. You might also notice increased thirst, more frequent urination, vomiting, or diarrhea. A simple blood test can confirm the diagnosis, and treatment options are effective. Hyperthyroidism also causes high blood pressure in many cats, which itself can drive increased vocalization.
Growths in the Throat or Nasal Passages
Nasopharyngeal polyps are benign growths that develop in the back of a cat’s throat or middle ear, anchored to the tissue by a slender stalk. Over months, a polyp grows until it starts blocking airflow. The cat feels like something is stuck above the palate, and when it tries to breathe through its nose, there’s a physical obstruction. This can produce labored, noisy breathing, difficulty swallowing, nasal discharge, sneezing, and sometimes a startling honking sound as the cat tries to clear its throat.
The voice change from a polyp tends to develop gradually rather than appearing overnight. These growths are more common in younger cats. Removal is usually straightforward, though the stalk needs to be fully extracted to prevent regrowth.
Laryngeal Paralysis
The vocal folds in a cat’s larynx need to open and close properly for normal breathing and vocalization. In laryngeal paralysis, one or both sides stop moving correctly. A study of 16 affected cats found the most common signs were labored breathing, difficulty swallowing, weight loss, voice changes, coughing, and lethargy. Twelve of the 16 cats had both sides paralyzed, while four had only one side affected.
Cats with one-sided paralysis tend to have milder symptoms and can often be managed without surgery. Those with both sides paralyzed may struggle significantly with breathing and sometimes need a surgical procedure to open the airway. The voice change from laryngeal paralysis is typically a weak, breathy, or absent meow rather than increased vocalization.
Cognitive Decline in Senior Cats
If your cat is older and the change is less about how the meow sounds and more about when and how often it happens, cognitive dysfunction syndrome (CDS) is worth considering. This is the feline equivalent of dementia. It affects an estimated 28 to 36% of cats aged 7 to 14, about half of cats over 15, and up to 88% of cats aged 16 to 19.
Excessive vocalization and aimless wandering are the most commonly reported problems in the oldest cats. In one study of cats with CDS-related vocalization, roughly a third vocalized mostly at night, a third mostly during the day, and a third during both. The nighttime vocalization pattern resembles “sundown syndrome” seen in human dementia, where confusion and agitation worsen in the late afternoon and evening. These cats may cry out loudly, seemingly without purpose, often while staring at nothing or wandering through the house. Other signs include changes in social interaction (especially increased clinginess), litter box accidents, and altered sleep patterns.
Hearing Loss
Cats use auditory feedback to regulate their own vocalizations, just as humans do. When that feedback loop breaks down due to hearing loss, the meow changes in predictable ways. Research comparing deaf, hearing-impaired, and normal-hearing cats found that deaf cats vocalized about 10 decibels louder than hearing cats. Their meows also had a lower average pitch and were far more variable in tone, meaning the sounds were less consistent from one meow to the next.
If your cat’s meow has become noticeably louder and less “polished” sounding, especially if your cat is older or no longer responds to sounds the way it used to, hearing loss could be the reason. You might test this informally by making a sharp noise (like clapping) behind your cat when it can’t see you and watching for a reaction.
Stress and Behavioral Changes
Cats are more vocal than their wild ancestors largely because we’ve reinforced it. They learned that meowing gets a response from humans. So changes in your household, a new pet, a move, a shifted schedule, the loss of a family member, can trigger changes in how and how much your cat vocalizes. A stressed cat may meow more insistently, develop a plaintive or whiny quality to its voice, or howl in ways it never did before.
The key distinction between behavioral and medical causes is context. A cat that only vocalizes when you’re preparing to leave, when locked out of a room, or when another animal is nearby is more likely responding to a specific emotional trigger. A cat whose voice has changed in quality (hoarse, raspy, weak) or whose vocalization pattern has shifted without an obvious environmental cause is more likely dealing with something physical.
When the Sound Itself Changes vs. the Pattern
It helps to think about your cat’s meow change in two categories. A change in sound quality, where the meow is hoarse, raspy, squeaky, or silent, points toward something physically affecting the throat or vocal folds: infection, polyps, laryngeal paralysis, or inflammation. A change in pattern, where your cat meows more often, at different times, or with different intensity, points toward systemic conditions like hyperthyroidism, cognitive decline, high blood pressure, hearing loss, or stress.
Veterinary guidelines for senior and geriatric cats specifically recommend that behavioral changes including vocalization should always be evaluated for an underlying medical problem. This is especially true if the change came on suddenly, is accompanied by other symptoms like weight loss or appetite changes, or if your cat is over 10 years old. A basic workup including blood tests and a blood pressure check can rule out or confirm the most common culprits quickly.