The first signs of dog dementia (Canine Cognitive Dysfunction) often involve subtle changes like disorientation (getting lost in familiar places, staring blankly), altered sleep patterns (restless nights, sleeping more during the day), increased anxiety or restlessness, and house soiling/accidents. You might also notice changes in social behavior (less interaction or becoming clingy), reduced interest in play, or increased vocalization (barking/whining).
Dog dementia symptoms are grouped into three stages—mild, moderate, and severe. There are typical patterns that appear within each stage. However, it's important to note that not every dog follows these exact patterns or stages.
If clinical signs of dog dementia are recognized, an MRI can help with diagnosis of CCDS. Degenerative brain diseases like canine cognitive dysfunction syndrome literally cause the brain to shrink, which can be captured by an MRI. MRI also helps to exclude other conditions that could impact a dog's health.
Your dog may show more or less activity, for example, pacing at night but unwilling to go on walks during the day. They may resist going to new places or meeting new people and also act anxious in social situations.
Dementia, also known as canine cognitive dysfunction (CCD), is the deterioration of the brain seen in senior dogs, starting around age 9. Symptoms and signs include confusion, irritability, anxiety, changes in appetite, not wanting to play, house soiling, and compulsive behaviors, among others.
There are no specific dog breeds prone to dementia—any dog could develop it. However, smaller dog breeds can have a higher risk of developing dementia, but this can partially be attributed to the fact that they, on average, live longer than larger breed dogs.
The average amount of time a dog will live after being diagnosed with dementia is about two years. That time estimate is drastically impacted on the stage of the disease when it is caught. That's why it's critical that you never dismiss or ignore a change in your pets behavior or routine.
However, CDS remains underdiagnosed due to lack of awareness – pet owners often assume the symptoms are a part of normal ageing, rather than dementia. Another issue with diagnosis is that many of the symptoms of CDS overlap with other conditions such as diabetes, deafness, and osteoarthritis.
Ultimately, the condition worsens over time, and evaluating a dog's quality of life becomes essential. Owners must consider factors such as physical pain, confusion, and overall happiness to determine when it might be time to consider euthanasia to prevent further suffering.
Sleep changes
Sometimes you may notice senior dog anxiety at night, including pacing, panting, whining, or barking. Or you might wake up to a furry face breathing near yours or the sound of ceaseless tag-jingling. For dog parents, the loss of sleep seems to be one of the hardest aspects of sundowning to deal with.
What are the signs of dementia in pets?
Veterinary professionals often observe that senior dogs with neurological conditions may circle due to confusion, loss of spatial awareness, or difficulty settling down. Because of this, circling in older dogs should never be ignored.
Dementia itself does not usually cause pain. But many dogs with dementia also suffer painful conditions such as arthritis in later life, and dementia can aggravate these. Compulsive pacing will hurt arthritic joints.
Develop and stick to a routine: The importance of a routine cannot be overstated for dogs with dementia. Doing the same activities and knowing they will be fed and walked at particular times of the day is very comforting for senior dogs, reducing stress they may feel from the other confusing aspects of CCD.
How fast does dog dementia progress? According to research, there are three distinct stages of progression, which level from mild to severe, with symptoms worsening and ramping up as time goes on. This can take from six months to a year between stages worsening.
Appetite loss/increase
A dog with CDS may go off their food – although this can obviously be a sign of other health issues. Alternatively, they may seem to forget when they've eaten and keep going back to their bowl, expecting to be fed.
The 3-3-3 rule for dogs is a guideline for the adjustment period after adoption, representing 3 days (overwhelmed/hiding), 3 weeks (settling in/testing boundaries), and 3 months (feeling at home/bonding) to help owners manage expectations and provide patience, routine, and a calm environment, understanding that anxiety is normal as they decompress from a stressful past. It's a framework for recognizing stress and fostering trust, not a rigid timeline, but it helps owners understand why a new dog might seem timid or act out initially.
Sudden changes in your dog's behavior can indicate serious health issues. If your dog is in pain, has a limp, or is unable to rise, these symptoms require further investigation. Difficulty breathing, refusing food or water, or being unable to get up to eliminate are major signs. Loss of balance is also important.
Most vets have no qualms about euthanasia and believe it's necessary for animals suffering severely or threatening public safety because of uncontrollable aggression. But vets may also feel strongly that killing animals for insufficient reasons is, though legal, contrary to their professional role.
There are no specific tests available for diagnosing CDS at this time. To rule out other causes of the dog's signs, the veterinarian may recommend additional tools such as blood and urine tests. An MRI may be recommended to look for abnormalities in the dog's brain.
Older dogs can develop something like dementia. As their brain function becomes impaired you may notice things such as tremors or excessive licking. Dogs can experience psychological disorders which can lead to compulsive behaviors such as excessive licking.
Selegiline for dogs can be a great option for some pups (and their parents) who are struggling with the effects of canine cognitive dysfunction, commonly known as doggy dementia. Integrative veterinarian Dr. Julie Buzby explains how selegiline works and when to expect to see improvement.
Circling behavior in senior dogs usually occurs as a result of cognitive issues or anxiety. A trip to the veterinarian is warranted each time your senior dog exhibits uncommon behaviors, including circling frequently and repetitively. (Circling before lying down in his dog bed or favorite napping spot is normal.)
For most people with Alzheimer's — those who have the late-onset variety — symptoms first appear in their mid-60s or later. When the disease develops before age 65, it's considered early-onset Alzheimer's, which can begin as early as a person's 30s, although this is rare.
Dementia can cause dogs to not recognize their owners or other pets in the home, leading to confusion, fear, and even aggression. Dogs may start to shrink away from interacting with owners or conversely, become more needy and clingy.