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• With evermore cats living to become elderly, age-associated behavioural

changes are being seen with increasing frequency.

• The behavioural changes reported most commonly are increased

vocalisation (especially at night), and inappropriate elimination.

• The most common causes of increased vocalisation are cognitive

dysfunction syndrome, hyperthyroidism (with or without systemic

hypertension), systemic hypertension (most commonly associated with

chronic kidney disease, hyperthyroidism or hyperaldosteronism), deafness,

osteoarthritis (or other causes of chronic pain) and brain tumours.


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Meowing and yowling


While increased vocalisaton is not a disease in itself, it is a sign that and elderly cat is stressed and/or ill.

by Danièlle Gunn-Moore

You were saying... ?


Excessive vocalisation in ‘Kamala’, a 17-year-old Korat cat with concurrent hyperthyroidism and stage II kidney disease.


With thanks to owner Janis Strathearn (Vancouver)

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Potential causes

Excessive vocalisation can result from a number of different disorders, including systemic illness, organic ...

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...for sleepless owners

Owner checklist


Asking specific questions about alternations in the cat’s behaviour can help in determining just how significantly the cat has changed.


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Increased vocalisation

in elderly cats

Volume 25(3), Autumn 2015

Commissioned paper