Is Your Pet Having a Senior Moment? Signs of Cognitive Dysfunction Syndrome

Have you noticed your sharp-as-a-tack senior dog suddenly staring at the hinge side of the door? Or your senior cat performing a loud, operatic solo to a blank wall at 2:00 AM?

As our beloved companions grow older, we expect grey hairs and slower steps. But sometimes, their minds start to wander too.

These quirky changes may be signs of Cognitive Dysfunction Syndrome (CDS)—often affectionately (and heartbreakingly) called “Dogzheimers” or kitty dementia.

The good news? You are not alone, and your pet isn’t simply “failing.” With the right support, we can help keep their golden years full of comfort, clarity, and dignity.

Cognitive Dysfunction Syndrome: It’s More Common Than You Think 

If you feel like your pet is slipping away, please know you aren’t imagining things. Brain aging is incredibly common:

• For Dogs:  Research shows that 28% of dogs aged 11–12 show signs of cognitive impairment, rising to 68% of dogs aged 15–16.
• For Cats: Cats experience cognitive changes too. Around 28% of cats aged 11–14 show age-related behavioural changes, rising to 50% in cats aged 15 or older. 

Despite how common this is, there is a massive gap in diagnoses. It is estimated that 14.2% of senior dogs have CDS, yet only 1.9% are formally diagnosed. Why? Because most pet parents assume their furry best friend is just slowing down naturally.

Dog Clues: The “DISHAL” Checklist

To help spot the signs in dogs, veterinarians use a handy acronym called DISHAL:

• D – Disorientation: Getting stuck behind doors, staring at walls, or getting lost in their own backyard.
• I – Interaction Changes: Suddenly withdrawing from the family, or conversely, becoming intensely clingy and following you like a shadow.
• S – Sleep-wake Cycles: Sleeping all day, then pacing, whining, or wandering the house at night.
• H – House-training Issues: Having “accidents” inside right after being let outdoors, or forgetting where the door is.
• A – Activity Level Changes: Repetitive pacing, aimless wandering, or circling.
• L – Learning & Memory: Forgetting tricks, commands, or daily routines they’ve known for years.

Cat Clues: The Feline Tell-Tales

Cats show cognitive decline a little differently depending on their age:

• Ages 11–14: The first signs are usually changes in social interactions (becoming unusually needy or suddenly aloof).
• Ages 15+: The most common signs are aimless wandering and excessive, loud yowling (vocalisation), particularly in the middle of the night.

Rule Out the “Copycats” First

If Buster or Cleo is acting strange, don’t self-diagnose! CDS is a “diagnosis of exclusion“. This means we have to play detective and rule out other medical conditions that mimic dementia.

For example, a dog pacing at night might not be confused—they might be in pain from osteoarthritis. A cat missing the litter box may have a urinary tract infection (UTI), whilst a pet ignoring familiar commands may be experiencing vision or hearing loss.

Our Brain-Boosting Game Plan

While there is no cure for CDS, we have a fantastic toolkit to slow down the clock and keep those neurons firing:

• Stick to a Routine: Predictability is a major anxiety-buster. Keep feeding times, walks, and bedtimes highly consistent.
• Make Home Safe & Easy: Keep your furniture in the exact same place (rearranging is highly confusing for a disoriented pet). Use non-slip mats on slick floors and plug in nightlights to help them navigate restless nights.
• Mental Gymnastics: Keep their minds active! Try food-dispensing puzzle toys, snuffle mats, or hide kibble around the house. You can even teach an old dog new tricks using “target training” (touching their nose to your finger/stick for a high-value treat).
• Brain Fuel & Medications: Diets rich in antioxidants and Medium-Chain Triglycerides (MCTs) may help support ageing brains.
• Diet: Diets enriched with antioxidants help fight free radicals in the brain. Supplements or diets with Medium-Chain Triglycerides (MCTs) are fantastic because they act as an alternative energy source for the brain when glucose metabolism slows down.
• Meds: We can prescribe clinically proven treatments like Anipryl (Selegiline) to boost neurotransmitters or antioxidant supplements like SAMe to protect brain cells.

Let’s Team Up!

What if that little change you’ve noticed isn’t simply “old age”—but something we can actually help?

You know your pet better than anyone. If something feels different, let’s find out why and build a plan to help keep their world familiar, comfortable, and full of the moments they still love.

Schedule a senior wellness consultation today. Because growing older may be inevitable—but feeling lost doesn’t have to be part of it.