Are Dogs with Dementia Suffering? Understanding Canine Cognitive Decline

September 25, 2025 |

If your grey-muzzled companion is in the end-stages of dementia in dogs, when to euthanize him or her may be a question that weighs heavily on your mind. To help give you some measure of peace and clarity, integrative veterinarian Dr. Julie Buzby invites Dr. Dawnetta Woodruff to the blog. As a veterinarian who specializes in end-of-life care, Dr. Woodruff is the perfect person to address this difficult decision with compassion and understanding.

Maybe you have a senior dog who is “just not himself” or “just not herself” lately. He or she paces the house, seems confused, pants a lot, barks at normal noises, and may even look at you as if you are a stranger. You may wonder what could possibly be wrong, and how do you manage it?

There are a variety of conditions that could be the culprit. However, the most likely explanation is that your dog might be dealing with dementia, a condition which affects 68% of dogs by 16 years of age. While it can’t be cured, there are some things you can do to help your dog continue to have a good quality of life. However, eventually the time may come when you need to consider when to euthanize a dog who has dementia.

Living with a senior dog brings many joys but it can also bring challenges when cognitive issues develop. As our furry companions age they may experience a condition similar to Alzheimer’s disease in humans. But a question that weighs heavily on many pet parents’ minds is are dogs with dementia actually suffering?

What Exactly Is Dog Dementia?

Dog dementia officially called Canine Cognitive Dysfunction Syndrome (CDS), is a progressive brain condition affecting older dogs. It’s characterized by gradual changes in behavior, memory and awareness that worsen over time.

Just like in humans with Alzheimer’s, dogs with dementia develop physical changes in their brains These include

  • Buildup of beta-amyloid protein forming plaques
  • Reduced blood flow to brain tissue
  • Damaged neurons that affect memory and learning
  • Deterioration in areas of the brain controlling memory

The condition doesn’t happen overnight – it’s a slow progression that many owners might not notice until symptoms become more obvious.

How Common Is Canine Dementia?

If you’re noticing changes in your senior dog, you’re not alone. Studies show that cognitive dysfunction affects:

  • 28% of dogs between 11-12 years old
  • A staggering 68% of dogs over 15 years of age

This means most dogs will experience some form of cognitive decline if they live long enough.

Signs Your Dog Might Be Suffering with Dementia

The DISHA acronym helps identify the primary symptoms of dog dementia:

D – Disorientation

Dogs with dementia often appear confused in familiar environments. They may:

  • Get stuck in corners
  • Stare blankly at walls
  • Stand at the wrong side of doors
  • Wander aimlessly around the house
  • Appear lost in familiar places

I – Interactions

Changes in how your dog interacts with family members and other pets:

  • Becoming withdrawn or less interested in attention
  • Increased clinginess or separation anxiety
  • Irritability or aggression when previously friendly
  • Not recognizing familiar people or pets

S – Sleep-Wake Cycles

Disrupted sleep patterns are common:

  • Restlessness and pacing at night
  • Increased sleeping during the day
  • “Sundowner syndrome” – increased confusion and anxiety in evenings
  • Excessive vocalization at night (barking, howling)

H – House Soiling

Forgetting house training:

  • Accidents indoors despite being previously house-trained
  • Not signaling to go outside
  • Eliminating in unusual places
  • Forgetting the purpose of going outdoors

A – Activity Changes

Changes in energy and behavior:

  • Decreased interest in play or walks
  • Repetitive behaviors like pacing
  • Reduced exploration of environment
  • Increased anxiety or restlessness

Are They Really Suffering?

This is the hardest question for pet parents. I believe the answer is nuanced and depends on several factors:

  1. Physical Discomfort: Dementia itself doesn’t typically cause physical pain, but the anxiety and confusion can be distressing.

  2. Psychological Distress: As dementia progresses, dogs often struggle with severe anxiety and fear that becomes increasingly difficult to control. It can get to the point where the only way to control their anxiety is to sedate them so heavily that they are sleeping all the time — and this is no way for them to live.

  3. Quality of Life: Consider whether your dog still experiences joy, recognizes family members, and can perform basic functions like eating and eliminating appropriately.

  4. Anxiety Levels: The confusion of dementia often leads to significant anxiety, which can be a form of suffering.

  5. Comorbid Conditions: Many senior dogs with dementia also have other age-related health issues that may cause discomfort.

Treatment Options to Improve Quality of Life

While there’s no cure for canine cognitive dysfunction, there are several approaches that may help manage symptoms and improve quality of life:

Medications

  • Selegiline (Anipryl) – FDA-approved for canine cognitive dysfunction
  • Anti-anxiety medications like trazodone (note: cannot be given with selegiline)
  • Your veterinarian may recommend other medications based on your dog’s specific symptoms

Dietary Changes

Specialized diets rich in antioxidants and medium-chain triglycerides have shown benefits:

  • Hills Cognitive + Mobility Brain Care j/d
  • Purina Neurocare

Supplements

Several supplements may help slow progression:

  • Omega-3 fatty acids
  • SAM-e (S-adenosylmethionine)
  • Vitamin E
  • Coenzyme Q10
  • Products like Senilife or Neutricks

Environmental Modifications

Making your home more “dementia-friendly”:

  • Maintain consistent routines
  • Use night lights to reduce confusion after dark
  • Limit access to stairs or areas where they might get lost
  • Keep food, water, and beds in easily accessible locations
  • Consider dog gates to create smaller, manageable spaces

Mental Stimulation

“Use it or lose it” applies to dog brains too:

  • Short, positive training sessions
  • Puzzle toys and food-dispensing toys
  • Gentle, predictable exercise routines
  • Regular but low-stress social interactions

Managing Nighttime Issues

Sundowner syndrome, where symptoms worsen at night, is particularly challenging for many pet parents. To help manage this:

  • Keep a consistent evening routine
  • Provide more exercise and mental stimulation during the day
  • Use night lights throughout the house
  • Consider crate training if it provides security (not confinement)
  • Discuss with your vet about appropriate evening medications
  • Try calming aids like ThunderShirts or pheromone diffusers

When Is It Time to Consider Euthanasia?

This is perhaps the most difficult question pet parents face. While there’s no single answer that applies to every dog, here are some considerations:

  1. Severe Anxiety: When a dog’s anxiety becomes so severe that even with medication they remain distressed.

  2. Loss of Joy: When your dog no longer shows interest in things they once enjoyed.

  3. Basic Functions: Inability to eat, drink, or eliminate properly.

  4. Recognition: When they no longer recognize family members or their environment.

  5. Day-to-Night Reversal: Complete reversal of sleep cycles that severely impacts quality of life.

  6. Response to Treatment: Limited or no improvement with appropriate treatments.

Remember that quality of life matters more than quantity. Sometimes the kindest choice is to prevent suffering when there’s little hope for improvement.

Creating a Support Plan for Dogs with Dementia

If your dog has been diagnosed with cognitive dysfunction, consider creating a comprehensive management plan:

  1. Regular Veterinary Check-ups: Monitor progression and adjust treatments.

  2. Medication Schedule: Create a consistent routine for any prescribed medications.

  3. Daily Routine: Maintain predictable feeding, walking, and sleeping schedules.

  4. Environmental Setup: Make necessary modifications to your home.

  5. Exercise Plan: Appropriate physical activity based on abilities.

  6. Mental Enrichment: Puzzle toys and gentle training.

  7. Quality Time: Focus on activities they still enjoy.

  8. Support Network: Connect with others caring for senior dogs.

Personal Experience from Dog Owners

Many dog owners report that the early stages of canine dementia are manageable with proper support. Dogs can still have good days and moments of joy. However, as the disease progresses, the good days typically become fewer.

One dog owner shared: “We knew it was time when our sweet old girl spent more time pacing and anxious than she did resting or enjoying life. The medications helped for a while, but eventually, they couldn’t keep up with her anxiety. Making the decision was heartbreaking, but watching her suffer was worse.”

Prevention Strategies

While not all cognitive decline can be prevented, research suggests several approaches may help delay onset or slow progression:

  • Lifelong mental stimulation through training and play
  • Regular physical exercise appropriate for age and ability
  • High-quality diet rich in antioxidants
  • Regular veterinary care to address health issues promptly
  • Starting brain-supporting supplements in middle age
  • Maintaining healthy weight and managing other health conditions

Dogs with dementia are experiencing a legitimate medical condition that affects their quality of life. In mild to moderate cases, dogs may not be suffering if their symptoms are well-managed and they still have good quality of life.

However, as the disease progresses, many dogs do experience suffering in the form of anxiety, confusion, and distress. This suffering can be significant, especially when their day-to-day experience becomes dominated by fear and disorientation rather than comfort and joy.

As pet parents, our responsibility is to monitor our dogs’ quality of life honestly and work with our veterinarians to provide the best care possible – whether that means treatment or, when treatments are no longer effective, making the difficult but compassionate choice to prevent further suffering.

Remember that you know your dog better than anyone. Trust your observations about their quality of life, seek support from veterinary professionals, and make decisions based on love rather than fear of loss.

Have you noticed signs of cognitive decline in your senior dog? What strategies have helped manage their symptoms? I’d love to hear your experiences in the comments.

are dogs with dementia suffering

Euthanasia is a beautiful and selfless decision

Considering euthanasia can sometimes feel like a selfish decision. “I don’t want to euthanize her just because she’s hard to care for!” is something that I hear often from distraught pet owners. But every time I hear those words, I hear them coming from a family member who loves their dog deeply and is making a heart-wrenching decision in order to end their dog’s struggles. That is the opposite of selfish—it is selfless.

are dogs with dementia suffering

I remind families that you’re not choosing euthanasia because your sweet dog is hard to care for. Rather you realize that your dog’s life has grown so difficult that he or she is no longer happy. You don’t want to see your dog get any worse. So, you are choosing to provide your dear companion an escape from his or her mental and physical pain. You are focusing on your dog’s quality of life above all else, and (while it is incredibly difficult) that is a kind and beautiful decision.

What does the progression of CCD look like?

The most troublesome symptoms often start with subtle changes. But as they progress in severity, a dog’s quality of life (QOL) can be greatly diminished. For example:

  • Getting stuck in the corner once every few days might be bothersome. But when it happens 5 to 10 times a day, the stress can be immeasurable.
  • An occasional puddle of urine or pile of stool might be easy to clean up. But when your dog is soiling the carpet or the bed multiple times a day, it can be frustrating and upsetting to both of you.
  • When your dog occasionally paces the house for a few minutes at night, you can both go back to sleep quickly. But when the pacing lasts for hours, and neither of you is able to sleep, you can both have increased stress and decreased overall health.

are dogs with dementia suffering

Not only does your dog’s quality of life decline, but you are constantly worrying and running on an empty tank. Your stress level is high. And you don’t feel like you have the energy or the patience to give your dog the love and care he or she needs, and you wish to provide. As the dementia worsens, the precious bond you share with your dog can begin to break…and that is the last thing either of you wants to happen.

Canine Dementia: everything you need to know about senility in dogs

FAQ

How do you take care of a dog with dementia?

A dog suffering from canine dementia is more likely to become confused, especially if he’s also struggling with vision loss. To make things easier for your pet, always keep water, food and bed in the same place. Try to avoid placing new items or furniture near his bed or water, as this can cause anxiety.

Is dementia in dogs fatal?

Canine dementia is not a fatal or painful condition, but many affected dogs are eventually euthanized due to poor quality of life as the disease progresses.Apr 21, 2025

Why do dogs with dementia pace?

Your pooch is probably pacing more because she is anxious, and she probably is not completely aware of where she is or her surroundings due to the dementia. As for the food thing, she most likely is forgetting that she has eaten, and therefore is overeating.

Is dog dementia treatable?

Currently, there is no cure for doggy dementia (CDS), but several treatment options are available to help manage the symptoms and slow down the progression of the disease.