Canine cognitive dysfunction is an age-related brain change in senior dogs, not simple old age. Watch for the DISHAA signs: disorientation, altered interaction, reversed sleep-wake cycles, house-soiling, changed activity and new anxiety. Every one of those can also come from a treatable medical problem, so a veterinary exam is the necessary first step.
Why early fall is when Burnside families finally notice
Something predictable happens on Burnside Road East once August turns into September. The evenings start closing in, households drop back into school and work routines, and the quiet stretch between dinner and bedtime gets longer and darker. That is exactly the window in which an older dog with cognitive change starts to look unsettled.
Owners often describe it the same way: the dog was fine all summer, and now, as the light fades, he gets restless. He paces the hallway. He stands in a corner. He barks at nothing at two in the morning. This pattern of late-day agitation is commonly called sundowning, and it is not a summer problem, because in July there is barely any evening darkness to trigger it. The shoulder season is when it becomes impossible to ignore.
The cooler, damper weather at this time of year adds a second layer. Joints that were loose and comfortable in August stiffen up in a wet Victoria October, and a stiff, sore dog also paces at night. Two very different problems can look identical from your bedroom doorway, which is the whole reason this is a veterinary conversation and not a guessing game.
DISHAA: the six changes worth writing down
Veterinarians use a plain-language checklist called DISHAA to organize what owners are seeing. It is not a test you can score at home, but it is an excellent way to describe your dog accurately when you call us.
- Disorientation. Getting stuck behind furniture. Standing at the hinge side of a door waiting for it to open. Blanking out in the middle of a room he has lived in for a decade. Going to the wrong door to be let out.
- Interaction changes. No longer coming to greet you. Or the opposite: shadowing you from room to room, unable to settle unless you are within sight. New irritability with another pet or with the grandchildren.
- Sleep-wake cycle reversal. Sleeping deeply through the afternoon, then pacing, panting and vocalizing through the small hours. This is usually the sign that finally makes a family phone the clinic.
- House-soiling. A dog who was reliably trained for eleven years starts having accidents indoors, sometimes minutes after coming in from the garden.
- Activity changes. Aimless wandering, repetitive circling, staring at a wall or licking the floor. Or the reverse: doing far less, losing interest in toys, food puzzles and the people at the door.
- Anxiety. New fearfulness of ordinary things. Startling at sounds he used to sleep through. Distress at being left alone in a dog who never minded before.
Write down what you see, when it happens and how often. If you can safely capture thirty seconds of the night-time behaviour on your phone, bring it. That short clip regularly tells a veterinarian more than an hour of description.
The part most articles skip: this is a diagnosis of exclusion
Here is the single most important thing in this article. Not one of the DISHAA signs is unique to cognitive decline. Every one of them can be produced by a physical problem that has a treatment, and a good number of those problems are common in senior dogs and cats.
- Night pacing and inability to settle can be arthritis pain, which the damp Victoria fall reliably makes worse.
- House-soiling can be kidney disease, diabetes, a urinary tract infection or bladder stones. Increased drinking is the clue owners most often miss.
- Apparent confusion can be failing eyesight or hearing loss. A dog who cannot see the doorframe in a dim hallway looks lost, and a deaf dog who does not hear you come home looks uninterested.
- High blood pressure can cause disorientation and sudden changes in vision, and it frequently sits underneath another condition.
- Pain anywhere, dental disease included, can turn a gentle old dog irritable.
- In cats, an overactive thyroid is a classic cause of night-time yowling, restlessness and weight loss, and it is very treatable.
So no, taking your senior dog to the vet is not a pointless trip to be told he is old. Sorting through that list is the entire point of the visit. Our medical services team starts with a full physical exam, a pain assessment and a careful history, then decides what needs testing.
What the workup usually involves
For an older dog or cat with new behaviour changes, a sensible starting point is senior bloodwork and a urinalysis, a blood pressure reading, a thyroid check in cats, and an assessment of eyes, ears, teeth and joints. Imaging is added when the exam points that way. Our in-house pet diagnostics can turn most of that around within the appointment, so you are not sent home to worry overnight.
The Senior Pet Wellness Plan in our wellness program is built around twice-yearly visits for exactly this reason. Cognitive change is gradual, and gradual change is what a single annual snapshot misses. Two visits a year give your veterinarian a trend line rather than a single dot.
If the workup comes back clean and the pattern still fits, cognitive dysfunction becomes the working explanation. That is not a dead end. It is the point at which a management plan starts, and the honest goal of that plan is to slow the progression and protect your dog’s day-to-day quality of life. No treatment reverses brain ageing, and any promise that one does should be treated with suspicion.
What genuinely helps an old dog at home
Small environmental changes do a surprising amount of work here, because a dog whose memory is fading leans harder on habit and on the physical layout of the house.
- Keep the routine boringly predictable. Same meal times, same walk times, same bedtime. September is when family schedules change, so decide now what the new normal looks like and hold it steady.
- Light the path. Plug-in night lights along the hallway, at the top and bottom of the stairs and near the water bowl. As the evenings draw in, an unlit route is where confusion and falls happen.
- Clear the dead ends. Move furniture so there are no narrow gaps to get wedged in. Block off stairs at night. Keep the route to the door and the water bowl the same every day.
- Non-slip flooring. Runners and mats on laminate and tile. A dog who slips once becomes reluctant to move, and reduced movement accelerates the whole decline.
- Short, regular walks. Little and often beats one long outing. A flat, familiar section of the Galloping Goose Trail suits an old dog well, while an unfamiliar route with strange smells and uneven footing tends to add confusion.
- Gentle mental work. Food puzzles suited to an old mouth, snuffle mats, and scent games where you hide a few treats in the same three spots. Scenting is often the last sense to fade, so nose work is kinder than anything visual.
- Daylight and outdoor time. Getting your dog outside in natural light during the day helps anchor a sleep-wake cycle that has started to drift.
On the veterinary side, there are diets formulated to support brain ageing and there are supplements with reasonable evidence behind them. Both belong in a conversation with your veterinarian rather than in an online shopping cart, because the right choice depends on your dog’s kidneys, liver, weight and other medications. Our nutrition counselling service exists for that discussion. Where anxiety or pain is a major part of the picture, that is managed alongside, not instead.
Cats get this too, and it is missed more often
Feline cognitive dysfunction is real and under-recognized, largely because cats are quieter about most things and louder about this one. The classic presentation is a thin, elderly cat yowling in an empty hallway at three in the morning. Other signs are missing the litter box, staring, reduced grooming, and sitting apart from a family they used to sit on.
Before any of that gets called cognitive change, an older cat needs thyroid testing, kidney values, blood pressure and a pain assessment. Arthritis is dramatically under-diagnosed in cats, and a sore cat who can no longer step over a high litter box lip is not confused, just uncomfortable.
When to book an appointment
Book a senior assessment if your dog or cat has shown any new disorientation, night-time restlessness, indoor accidents, or a change in how they interact with you. Sooner is better, because the treatable causes on that list respond best when caught early, and management for cognitive change works best when it starts before the pattern is entrenched.
Some things should not wait for a routine slot. Sudden circling, a head tilt, seizures, collapse, sudden blindness, or a dog who cannot stand are urgent, and we would rather hear from you that same day through urgent care. If it happens on one of the days we are closed, an emergency veterinary hospital is the right call rather than waiting for us to reopen.
For the wider picture on ageing pets, our guide to senior pet care in Burnside covers the routine side of things, and our article on early signs of arthritis in dogs is worth reading alongside this one, since joint pain is the most common look-alike.
Frequently asked questions
How do I tell canine cognitive dysfunction from normal ageing?
You cannot tell them apart at home, and that is the honest answer. Normal ageing slows a dog down; cognitive dysfunction changes what they do, not just how fast they do it. Getting lost in a familiar room, reversing day and night, or losing house training are changes worth investigating rather than accepting.
My old dog paces and pants at night. Is that dementia?
It may be, but night pacing is one of the least specific signs there is. Arthritis pain, a full or irritated bladder, high blood pressure, hearing loss and heart or breathing problems all cause the same restlessness. A physical exam and some basic senior testing is how that gets sorted out.
Can canine cognitive dysfunction be cured?
No, and nobody should tell you otherwise. It is a progressive condition, and the realistic goals are slowing how quickly it advances and keeping your dog comfortable, oriented and connected to the family for as long as possible. Many dogs do noticeably better once a plan is in place.
At what age should I start watching for this?
Start paying closer attention from around seven years in most dogs, earlier in large breeds, and from about ten in cats. That is also when twice-yearly senior visits start earning their keep, because subtle changes are far easier to spot against a recent baseline than against a check-up from last autumn.
Do cats really get dementia as well?
Yes. Feline cognitive dysfunction produces night-time vocalizing, disorientation, litter box lapses and reduced grooming in older cats. It is easily confused with an overactive thyroid, kidney disease, high blood pressure or arthritis, all of which are more common and more treatable, so those get ruled out first.
Bring your senior pet in before the evenings get any darker
An hour with our team is what turns “he’s just getting old” into an actual answer. Phone Midtown Veterinary Hospital at (778) 775-8387, or book a senior assessment through our wellness program, and we will work through the treatable causes first and build a plan from there. Evening appointments until 8 PM make it easier to come in after work.
Published by the team at Midtown Veterinary Hospital.
This article is provided for general education only and does not replace an in-person veterinary examination, diagnosis or treatment. Please contact Midtown Veterinary Hospital about any concern regarding your pet, or the nearest emergency veterinary hospital when we are closed.
Midtown Veterinary Hospital
691 Burnside Rd E, Victoria, BC V8T 2X9
Phone: (778) 775-8387
Hours: Monday 12 PM to 8 PM
Tuesday: 12 PM to 8 PM
Wednesday: Closed
Thursday: Closed
Friday: 12 PM to 8 PM
Saturday: 12 PM to 8 PM
Sunday: 12 PM to 8 PM