Last Updated: 13/08/2026
Dog Dementia Treatment: How to Help Your Senior Dog
Your vet-approved guide to managing dog dementia: home modifications, enrichment, the best diets and supplements, and when to consider medication.
Author: Dr Gillian Hill BVSc (Hons)
Reading Time: 4 minutes - short read
Once your vet has confirmed dog dementia (Cognitive Dysfunction Syndrome), the question becomes: what can you actually do? The good news is that with the right combination of environmental adjustments, enrichment, nutrition, and sometimes medication, you can meaningfully slow decline and keep your dog comfortable. This guide covers the strategies our vets recommend.
For a full overview of caring for an older dog, see our senior dog care guide. And if you're still working out whether your dog has dementia, start with Dog Dementia: Signs, Symptoms and Causes.
How can I modify my home for a dog with dementia?
Modifying your dog's environment can help to meet their needs and enhance their comfort.
- Ensure that food and water bowls are easily accessible, and extra bowls can be offered in different locations around the house.
- Offer extra toileting opportunities - for senior dogs, additional chances to toilet outdoors help with house soiling.
- Increase daytime exercise and play, and reduce distractions and disturbances in the evening to help combat sleep wake cycle changes and reduce night time waking.
- Provide private resting areas away from foot traffic and household activity.
- Provide padded surfaces for resting and traction around the house.
- Keep your dog's routine consistent, to help reduce anxiety.
A simple tip we give clients: use a baby gate rather than closing doors - being able to see and hear their family can help to reduce anxiety in dogs with CDS.
What enrichment helps dogs with dementia?
You can't teach an old dog new tricks... or can you? Positive reinforcement training and environmental enrichment can provide enormous benefits to older dogs - and you definitely can teach them new tricks!
It has been shown that enrichment of a dog's life can slow cognitive decline, through:
- 30 mins positive reinforcement training per day
- Weekly rotation of play toys
- Social interaction
- Regular physical activity (at least two 20 minute outdoor walks each week)
When combined with dietary supplementation with antioxidants, the results were even better! So get out those toys and treats and start playing and training!
What is the best way to brain train a senior dog?
Keep it simple and low-impact! Use interactive puzzle toys, hide high-value treats around the living room for a "scent walk," or spend ten minutes practicing gentle, rewarding tricks they already know. Keeping their mind active helps maintain neural connections, much like a crossword puzzle does for us!
What foods and supplements help dogs with dementia?
The most evidence-based nutritional approach to dog dementia combines omega-3 fatty acids (DHA and EPA), antioxidants, and medium-chain triglycerides (MCTs) - either through a purpose-formulated senior diet like Pro Plan Bright Minds, or through targeted supplementation alongside your dog's current food.
Here's a breakdown of the key ingredients and where to find them:
Medium-chain triglycerides (MCTs) As dogs age, the brain becomes less efficient at using glucose as its primary energy source. MCTs - derived from coconut or palm kernel oil - bypass this problem by providing an alternative fuel source the aging brain can use more readily. Studies in dogs have shown MCT supplementation improves performance on cognitive tasks and reduces beta-amyloid deposits in the brain. Look for "enhanced botanical oils" on the ingredient list of senior dog foods.
Omega-3 fatty acids (DHA and EPA) DHA in particular is a structural component of brain cell membranes and plays a key role in maintaining healthy neurological function. EPA helps reduce neuroinflammation. Both are found in fish oil and marine-based supplements. Adding an omega-3 supplement to your dog's existing diet is one of the most accessible things you can do.
Antioxidants (Vitamin E, Vitamin C, selenium, carotenoids) Oxidative stress - damage caused by free radicals - is one of the main drivers of age-related brain changes in dogs. Antioxidants help neutralise this damage. Research has shown that antioxidant supplementation combined with environmental enrichment produces better cognitive outcomes than either intervention alone, which is why diet and enrichment are best used together.
Your vet is best placed to advise on which prescription diet suits your dog's full health picture.
A note on timing Nutritional interventions work best as early as possible - ideally before significant cognitive decline, or at the first sign of changes. They slow the rate of decline rather than reversing damage already done, so starting at the "mature" lifestage (around 7-8 years for most breeds) rather than waiting for a diagnosis is the better approach.
Always check with your vet before adding supplements if your dog is on a prescription diet, medication or has concurrent health conditions, as some interactions are possible.
Also worth reading: Top 5 Benefits of Switching to a Senior Dog Food and our guide to pet supplements.
What can help an anxious dog with dementia?
Age-related behavioural changes can not only be upsetting for us humans, but they can also be distressing for your pet. Anti-anxiety products can be extremely helpful for dogs experiencing mild anxiety. For those with more severe anxiety, or trouble settling, your regular vet may be able to prescribe some medication to help your pet to settle.
In clinic, we often start with pheromone products (like Adaptil) and supplements like Zylkene or Vetalogica Tranquil before considering prescription options - and for nighttime pacing or vocalisation, small environmental changes like a white noise machine can also help.
For more information, read through our article on How to Calm an Anxious Pet.
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History
Our experts continually monitor the health and wellness space and we update our articles when new information becomes available.
Thu 13 Aug 2026
Written by Dr Gillian Hill BVSc (Hons)Dr Gillian Hill BVSc (Hons)
Veterinarian
Dr. Gillian graduated from the University of Sydney in 2005 with a Bachelor of Veterinary Science. She worked in a number of small animal clinics, before joining the Pet Circle Vet team in 2020. Dr. Gillian has special interests in ultrasonography, surgery and behaviour. Her favourite part of being a vet is being an advocate for the animals. She loves helping owners to make the best, evidence-based decisions for their pets, and seeing the beautiful bond that people have with their fur-babies.
