An older dog who begins scratching doors, pacing, chewing objects or toileting indoors may be experiencing pain, sensory loss, anxiety or cognitive change. Veterinary research stresses that similar signs can come from different diseases, so an online checklist cannot diagnose canine cognitive dysfunction.
Possible reasons
Pain or reduced mobility
Arthritis, dental pain or another painful condition can disrupt sleep, increase irritability and make the dog struggle to reach outside or settle comfortably.
Hearing or vision loss
A dog who cannot locate people or interpret the environment as before may startle, become distressed behind barriers or scratch to follow family.
Canine cognitive dysfunction
Possible signs include disorientation, changed social interactions, altered sleep–wake patterns, house-soiling, activity changes and anxiety. These signs overlap with medical conditions and normal ageing, so diagnosis needs a veterinary work-up.
Medical illness
Kidney or urinary disease, hormonal conditions, digestive problems, brain disease and medication effects can change appetite, toileting, sleep or behaviour.
A changed environment
A house move, new pet, family schedule, construction noise or loss of a companion can be harder for a senior dog to process.
What to record before the appointment
- Date the change began and whether it was sudden or gradual.
- Video pacing, scratching, staring, vocalising or unusual movement.
- Note appetite, thirst, weight, toileting, sleep and mobility.
- List medications, supplements and recent dose changes.
- Record whether damage occurs alone, overnight or around specific triggers.
Make the home easier now
- Keep furniture, bowls and beds in predictable places.
- Add non-slip runners and block unsafe stairs.
- Use soft night lighting and easy outdoor access where safe.
- Provide more frequent toilet opportunities.
- Offer gentle sniffing and simple familiar activities rather than difficult puzzles.
- Use gates to protect hazards, but watch for barrier distress.
Treatment is individual
Your vet may examine teeth, joints, vision and hearing and recommend blood, urine or other tests. Treating pain or illness can improve behaviour. If cognitive dysfunction or anxiety is suspected, management may include environmental changes, diet, medication and a tailored behaviour plan.
Do not punish confusion, accidents or damage. A senior dog is not becoming spiteful. Calm predictability and medical care are the useful responses.