Moderate severity

Feline Cognitive Dysfunction

An age-related decline in brain function — the feline equivalent of dementia — that causes disorientation, changed sleep patterns and night-time yowling in senior cats.

⚠️ Common symptoms

Night-time yowling or cryingDisorientation or staring at wallsAltered sleep–wake cyclesReduced interaction with the familyHouse-soiling outside the litter trayExcessive or reduced groomingApparent confusion in familiar spaces

As cats live longer, more of them reach the age at which the brain itself begins to change. Feline cognitive dysfunction is essentially dementia in cats: a slow decline in memory, awareness and learning driven by ageing changes in the brain, including deposits of proteins strikingly similar to those found in human Alzheimer's disease. It typically appears in cats over 11, and becomes increasingly common with each additional year.

The signs can be subtle and are easily dismissed as 'just getting old'. A classic picture is the senior cat who wakes in the small hours and wanders the house crying — loud, plaintive night-time yowling that puzzles and worries owners. Others seem to forget where the litter tray is, stare at walls, become less interested in company, or lose their normal grooming habits. Because these changes come on gradually, they are often noticed only once they are quite advanced.

Crucially, many of these signs overlap with other treatable conditions of old age — an overactive thyroid, high blood pressure, arthritis pain, or failing sight and hearing. A veterinary work-up is essential to rule those out first. Where cognitive dysfunction is the answer, a great deal can still be done: antioxidant-rich diets, omega-3 supplements, enrichment, gentle routine, night-lights and calm reassurance all help an ageing cat feel secure and stay engaged for as long as possible.

🔍 Causes

Ageing changes in the brain — including the build-up of proteins similar to those in human Alzheimer's disease, reduced blood flow and oxidative damage — gradually impair memory, learning and awareness in cats, usually from around 11 years of age onward.

🛡 Prevention

It cannot be fully prevented, but lifelong mental stimulation, a good diet, and regular veterinary check-ups that catch and treat other illnesses early all support brain health. Keeping a senior cat's environment stable and low-stress reduces the impact of any decline.

💊 Treatment

There is no cure, but the condition can be managed to keep older cats comfortable. Vets may recommend diets and supplements rich in antioxidants and omega-3 fatty acids, environmental enrichment, predictable routines, and in some cases medication to ease anxiety. Treating any co-existing pain or illness often improves the signs markedly.

When to see a vet: Have a senior cat checked if it starts yowling at night, seems lost in familiar rooms, or changes its sleep or toilet habits — these signs can also indicate high blood pressure, thyroid disease, pain or failing senses, all of which need ruling out first.

⚕️ Medical disclaimer

  • This information is educational only and is not a substitute for veterinary advice.
  • Symptoms overlap between conditions — only a vet can diagnose accurately.
  • Never withhold treatment or self-medicate based on information found online.
  • When in doubt, call your vet. Early intervention almost always leads to better outcomes.

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