Is Your Dog Getting Forgetful? Understanding Canine Cognitive Dysfunction

Mrs. Patterson brought her thirteen year old Cocker Spaniel, Biscuit, to my office because he'd started having accidents in the house. "He's been house trained for twelve years," she said, clearly distressed. "He just stands in the living room and goes. He doesn't even seem to realize he's done it."

After ruling out urinary tract infection, kidney disease, and other medical causes, I had to deliver a diagnosis that's becoming increasingly common in my aging patient population: canine cognitive dysfunction, or CCD. The canine equivalent of Alzheimer's disease.

What CCD Actually Is

Canine cognitive dysfunction is a neurodegenerative disease characterized by progressive cognitive decline that cannot be attributed to other medical conditions. Like Alzheimer's in humans, it involves the accumulation of beta amyloid plaques in the brain, neuronal loss, and disrupted neurotransmitter function.

It's more common than most people realize. Studies estimate that 28% of dogs aged 11 to 12 show at least one sign of cognitive dysfunction, and that number rises to 68% for dogs aged 15 to 16. Many cases go undiagnosed because owners attribute the symptoms to "just getting old."

The DISHAA Signs

Animal behaviorists use the DISHAA acronym to categorize CCD symptoms:

D: Disorientation

• Getting "lost" in familiar environments (going to the wrong side of the door, getting stuck in corners)
• Staring at walls or into space
• Appearing confused about where they are
• Failing to recognize familiar people or pets

I: Interaction changes

• Decreased interest in social interaction
• Less enthusiastic greetings (or no greeting at all)
• Withdrawal from family activities
• Increased clinginess or anxiety around specific people

S: Sleep/wake cycle changes

• Sleeping more during the day, restless at night
• Pacing or vocalizing at night (sundowning)
• Reversal of normal sleep/wake patterns

H: House soiling

• Accidents indoors despite years of reliable house training
• Elimination in unusual locations
• Seeming unaware that they've had an accident

A: Activity level changes

• Decreased interest in play or toys
• Repetitive behaviors (pacing in circles, licking)
• Aimless wandering
• Decreased exploration on walks

A: Anxiety

• New onset anxiety or fearfulness
• Increased separation anxiety
• Agitation in previously comfortable situations
• Vocalization (whining, barking) without apparent cause

Diagnosis

CCD is a diagnosis of exclusion, meaning we must first rule out other medical conditions that could explain the symptoms. A thorough diagnostic workup includes:

• Complete physical and neurological examination
• Bloodwork (to rule out metabolic causes like kidney disease, liver disease, thyroid dysfunction)
• Urinalysis (to rule out urinary tract infection or kidney issues)
• Blood pressure measurement
• Assessment of pain (which can cause behavioral changes that mimic CCD)
• In some cases, advanced imaging (MRI) to rule out brain tumors or other structural changes

Management Options

CCD cannot be cured, but it can be managed. The goal is to slow progression and maintain quality of life for as long as possible.

Environmental enrichment

Mental stimulation is one of the most important interventions. Puzzle feeders, scent work, gentle training sessions, and novel experiences help maintain neural pathways and may slow cognitive decline.

Nutritional support

Diets rich in antioxidants, omega 3 fatty acids, and medium chain triglycerides have shown benefit in studies. Additionally, NAD+ levels decline significantly with age and this decline is associated with impaired cellular repair in the brain. Supplementing with NAD+ precursors like NR may support neuronal energy production and resilience.

Pharmaceutical options

Selegiline (Anipryl) is the only FDA approved medication for CCD in dogs. It works by increasing dopamine levels in the brain. Some dogs show meaningful improvement, while others show minimal response. a qualified professional can discuss whether it's appropriate for your dog.

Environmental management

• Maintain consistent routines (meals, walks, bedtime at the same times)
• Keep the home layout stable (don't rearrange furniture)
• Provide nightlights for dogs with nighttime disorientation
• Use baby gates to prevent access to stairs or areas where a confused dog could get stuck
• Keep water bowls in multiple easily accessible locations

Living with CCD

A CCD diagnosis can be emotionally devastating for owners. It helps to remember that dogs with CCD are not suffering in the way we might assume. They still experience comfort, warmth, good food, and the presence of people who love them. The disease changes their cognitive processing, but it doesn't erase their capacity for contentment.

Quality of life monitoring becomes essential. Work with a qualified professional to establish quality of life metrics and check in regularly. As the disease progresses, you'll face difficult decisions, and having an ongoing relationship with a professional who knows your dog makes those decisions more grounded and less isolating.