Companion Animal Pain Assessment: Recognising Subtle Signs

Pain recognition in companion animals requires understanding species-specific indicators. Many animals hide pain effectively, making owner awareness of subtle behaviour changes essential for early intervention.

Key Facts

Cats are particularly effective at hiding pain due to evolutionary pressure as both predator and prey
The Feline Grimace Scale provides validated facial pain assessment for cats in veterinary and home settings
Dogs with chronic pain often show gradual behaviour changes owners adapt to rather than recognising as pain signs
Changes in social interaction, grooming patterns, sleep quality, and activity levels are common pain indicators across species
Veterinary pain assessment increasingly uses owner-completed questionnaires alongside clinical examination
Stoic breeds including northern dogs and terriers may show fewer pain behaviours than more demonstrative breeds

Welfare Considerations

The welfare significance of unrecognised pain in companion animals is substantial: animals experiencing chronic pain that is not identified and treated live for extended periods in compromised states that their owners are unaware of. The normalisation of subtle pain signs - a dog that is slightly less playful, a cat that grooms less - means welfare compromise accumulates without triggering veterinary consultation. Owner education about species-specific pain signs is therefore a high-value welfare intervention. The Feline Grimace Scale, validated for use by owners, provides a structured home-monitoring tool that has been shown to identify pain episodes in cats with known painful conditions before veterinary appointments. For dogs, validated owner-completed questionnaires measuring activity, interaction, and comfort enable longitudinal pain monitoring that captures subtle changes. Training both owners and veterinary professionals in pain recognition is a core welfare improvement opportunity.

What You Can Do

Learn the species-specific signs of pain for any companion animal you keep
Use the Feline Grimace Scale regularly if you have a cat with a known painful condition
Book veterinary appointments for gradual behaviour changes, not only obvious acute illness
Complete owner-reported quality of life questionnaires regularly for senior or chronically ill pets
Never assume that a quiet, still animal is pain-free: pain often causes stillness rather than obvious distress
Advocate for pain assessment training as mandatory continuing professional development for veterinary professionals