If your senior dog has started wandering the house at 3am, forgetting familiar faces, or staring blankly at a wall, it's easy to write it off as "just getting old." But these can be early signs of canine cognitive dysfunction (CCD) — a condition similar to Alzheimer's in humans that affects a surprising number of ageing dogs. Recognising it early makes a real difference to your dog's comfort and quality of life.
What Is Canine Cognitive Dysfunction?
CCD is a progressive decline in brain function linked to ageing. Much like human dementia, it's caused by changes in the brain — including the build-up of amyloid plaques and reduced blood flow — that gradually affect memory, learning, awareness, and perception. Studies suggest that around a third of dogs over 11 years old show at least one sign of CCD, and that number climbs sharply in dogs over 15. Despite how common it is, it's frequently mistaken for normal ageing or simple crankiness, which means many dogs go unsupported for months or years.
Early Warning Signs to Watch For
Vets often use the acronym DISHA to describe the pattern of changes: Disorientation, Interaction changes, Sleep-wake cycle disruption, House-training accidents, and Activity level changes. In everyday terms, keep an eye out for:
- Getting "stuck" in corners or behind furniture, or staring at walls and empty spaces
- Pacing, whining, or being restless at night, then sleeping more during the day
- Forgetting house-training, even though nothing else has changed
- Seeming less interested in family members, play, or greetings at the door
- Getting lost in familiar places, like their own backyard
- New or worsening anxiety, especially around being left alone
One or two of these on their own might mean nothing. But a cluster of new changes, especially in a dog over the age of eight, is worth taking seriously.
What You Can Do at Home
There's no cure for CCD, but there's a lot you can do to slow its progression and keep your dog comfortable:
- Keep routines predictable. Consistent feeding, walking, and bedtime routines reduce confusion and anxiety.
- Add gentle mental stimulation. Short training refreshers, sniff-based games, and slow-fed meals all keep the brain active without overwhelming an older dog.
- Protect nighttime sleep. A comfortable, well-supported bed away from draughts and noise can reduce nighttime restlessness.
- Keep their world safe and familiar. Avoid rearranging furniture, and use nightlights if your dog seems disoriented after dark.
- Support them physically too. Gentle, regular movement supports blood flow and overall brain health, even if it's just a slower, shorter walk.
When to See the Vet
Because many of the signs of CCD overlap with other conditions — arthritis pain, vision or hearing loss, thyroid issues, or urinary tract infections — a vet visit is an important first step, not a last resort. Your vet can rule out treatable medical causes and, if CCD is likely, discuss diet changes, supplements, and in some cases medication that can meaningfully slow progression when started early.
The Bottom Line
Cognitive decline in senior dogs is common, under-recognised, and often manageable. If your older dog seems a little more lost, a little more anxious, or just not quite themselves lately, don't dismiss it as "just old age." A quick conversation with your vet, paired with a calm, predictable home environment, can help your senior dog feel safe and settled for years to come.