As dogs get older, their needs change, and sometimes, so does their behaviour. Maybe your dog seems a little confused lately. Or they’re not quite themselves. It could be a natural part of ageing called dog dementia, and while it might sound worrying, there’s a lot you can do to help them feel calm, comfortable, and cared for.
Dog dementia (known more formally as canine cognitive dysfunction, or CCD) is a bit like Alzheimer’s in people. It affects memory, behaviour, and how dogs experience the world around them. It doesn’t happen overnight, and it’s more common than you might think, especially in dogs over 10.
To help make things easier, vets often group the signs into six key areas using something called the DISHAA framework. We’ve broken these down below, with plain, practical advice to help you spot the signs and support your dog if you need to.
What causes dementia in dogs?
As dogs age, changes in the brain can affect how nerve cells talk to each other. Just like in people, proteins can build up and cause disruption, and that leads to memory issues, confusion, and changes in behaviour.
According to Cornell University, over half of dogs aged 11 or older show at least one sign of cognitive decline. That risk goes up as dogs get older, so spotting changes early makes a big difference.
Disorientation
(aka: “Why am I in the bathroom again?”)
Ever found your dog standing in a room, looking confused? Or staring at the wall for no reason? One of the first signs of dementia is getting lost in familiar places.
You might notice your dog:
- Wandering aimlessly
- Getting stuck behind furniture
- Struggling to find their food bowl or bed
- Seeming dazed in rooms they’ve known for years
They’re not being silly or stubborn, they’re just trying to make sense of a world that feels different. A predictable routine and keeping things in familiar places can really help.
Changes in interaction
(aka: Less into you, or suddenly very into you)
Some dogs with dementia pull away from people they love. Others become extra clingy. It’s all part of the same shift.
What to look out for:
- Not greeting you like they used to
- Avoiding cuddles or play
- Becoming grumpy with other pets
- Following you everywhere, even into the loo
If their usual personality feels “off,” it’s a sign worth noting. It doesn’t mean they love you any less, they’re just not sure how to act.
Sleep–wake cycle changes
(aka: Zoomies at midnight, snoozing all day)
One of the more noticeable signs is when your dog’s sleep gets all out of sync. They might:
- Pace or bark during the night
- Seem restless when the house is quiet
- Sleep more than usual in the daytime
This change in rhythm can be tough on both of you. Try to keep mealtimes and bedtime routines consistent, it can help them settle better.
House soiling or training loss
(aka: Accidents happen, so don’t take it personally)
If your dog suddenly starts having accidents indoors, it could be linked to dementia, not bad behaviour.
They might:
- Forget where the door is
- Not signal when they need to go
- Seem confused after they’ve had an accident
It can feel frustrating, especially if they’ve been house-trained for years, but this is about memory loss, not laziness. Being gentle, not scolding, makes a big difference.
Activity and energy changes
(aka: Not feeling like walkies anymore)
Is your dog less interested in toys, walks, or games they used to love? They might still enjoy a sniff outside, but seem less playful, or more repetitive in their behaviour.
You might see:
- Loss of interest in play
- Pacing or circling
- Seeming unsure what to do with a toy
These are signs their brain needs more support. A balanced diet can help here - especially one designed for older dogs. Our Senior Dog Food is made with natural ingredients and added support for joints.
Anxiety or restlessness
(aka: Worried without reason)
Dementia can make dogs feel unsettled, even in familiar surroundings. They might:
- Bark more
- Pace back and forth
- Seem jumpy or stressed over small things
It’s not that they’re “nervy”, it’s that things just feel unfamiliar. Calm spaces, gentle exercise, and sticking to a routine can go a long way.
What to do if you spot these signs
First things first: don’t panic. Dog dementia is common, and many dogs live happily for years with the right support. Here’s what can help:
Book a vet check-up – to rule out other issues and get tailored advice
Stick to a routine – predictability = security for your dog
Keep things calm and consistent – same walk times, same feeding spot, same bed
Try enrichment games – simple scent games or puzzle toys can stimulate their brain
Feed with purpose – diets rich in Omega-3s and antioxidants can support ageing brains
We’ve made it easy with our natural senior dog food, crafted to support older dogs with exactly what they need—and nothing they don’t.
Want to dig deeper? There’s some great advice from the American Kennel Club and PDSA if you’d like more vet-backed insight.
Final word
If your dog is showing signs of dementia, know this: you’re doing the right thing by noticing, caring, and learning. Your dog isn’t being difficult, they’re just asking for help in the only way they know how.
At Harringtons, we’re here to make that easier. With natural food made for every life stage, and honest advice that puts your pet first.
Feed with confidence. Feed with Harringtons.
