Why cats vocalise differently with humans
Adult cats in feral colonies are largely silent with each other — they rely on scent, body posture and subtle visual cues to communicate. Meowing at other adults is rare. The range of sounds cats produce around humans, particularly the meow, appears to be a learned, adapted behaviour.
Research by Dr. John Bradshaw of the University of Bristol and others suggests that cats retain kitten-style vocalisations because they reliably get a response from humans. Over time, individual cats develop their own repertoire — some cats become very vocal, others almost silent, shaped largely by what has worked for them in the past.
The main sound types
Meow
The most variable sound — cats modify pitch, length and repetition to signal different needs. A short, rising meow is typically a greeting or request. A long, drawn-out meow usually signals frustration or demand.
Purr
Cats purr when content, but also when in pain or stressed — purring appears to be a self-soothing mechanism. The vibration frequency (25–150 Hz) may have bone-healing properties, according to research published in the Journal of the Royal Society of Medicine.
Solicitation purr
High priority · Hard to ignore
A purr with an embedded high-frequency cry, used specifically when requesting food. McComb et al. (2009) showed humans rated this as more urgent and unpleasant than regular purring, even without cat experience.
Chirp / Chatter
Predatory arousal
The rapid jaw movement made when watching birds or prey through glass. Likely a frustrated predatory reflex, or possibly prey-lure mimicry. Harmless — do not discourage it.
Trill
A short, rising sound made with the mouth closed. Mothers use it with kittens; adult cats often use it as a friendly greeting with trusted humans or other cats.
Hiss / Growl
Defensive warning
Clear warning signals. Hissing is a bluff display to create distance. Growling indicates sustained threat. Both should be respected — continuing to approach typically escalates to a bite or scratch.
When vocalisation changes are a red flag
Changes in how much or how a cat vocalises are one of the most reliable behavioural indicators of illness, especially in senior cats. Watch for:
- Sudden increase in vocalisation, particularly at night — common in hyperthyroidism and hypertension
- Repetitive, disoriented calling with no apparent target — associated with feline cognitive dysfunction (dementia)
- Pain vocalisations: yowling when touched, handled, or when using the litter tray
- Loss of voice or a changed, hoarse quality to vocalisations
The Merck Veterinary Manual lists behavioural change — including changes in vocalisation — as one of the primary reasons to book a vet check for cats over 10 years old.
Responding to meows. You cannot "spoil" a cat by responding to its vocalisations. Ignoring a cat that is asking for something it genuinely needs (food, attention, access to a litter tray) creates frustration and can increase stress. Respond to need; manage demand by setting predictable routines.