Understanding Canine Cognitive Dysfunction Syndrome (CDS)

Is Your Senior Dog Acting Differently? Recognizing Canine Alzheimer’s (CDS)

Has your dog recently shown signs of aggression, ignored familiar commands like "sit" or "stay," or started sleeping all day? These behavioral shifts might not be just "old age"—they are warning signs of Canine Cognitive Dysfunction Syndrome (CDS), commonly known as Dog Alzheimer’s.

What is Canine Cognitive Dysfunction (CDS)?

CDS is a cognitive disorder typically found in senior dogs aged 8–10 years and older. It significantly impacts their movement, emotional regulation, and memory, making daily routines difficult. The condition is caused by the accumulation of Beta-Amyloid plaques in the brain, which leads to the release of free radicals, nerve cell death, and decreased cognitive signaling.

The Warning Signs

• Failing to recognize the owner or even snapping/biting them.
• Sleeping all day and showing no interest in surroundings.
• Defecating or urinating in inappropriate places.
• Forgetting commands like "sit," "stay," or "shake."
• Not reacting when their name is called.
• Being awake or restless at night.
• Barking or getting startled for no apparent reason.
• in circles, getting stuck behind furniture, or getting lost in their own home.

Treatment and Management

While there is currently no cure for CDS, the progression can be slowed.Medication selegiline hydrochloride (L-deprenyl HCl) is often prescribed to increase dopamine levels and neurotransmitters. Studies show improvement within one month and can extend the pet’s quality of life by an average of 1–2 years.Supplements brain-boosting nutrients such as Vitamin B complex, Vitamin C, Omega-3 fatty acids, and Beta-carotene are highly recommended.

Providing extra attention and gentle communication.Maintaining a consistent home environment (avoid moving furniture, which causes stress).engaging in light mental stimulation and regular walks.with proper care and patience, we can help our beloved companions fight this disease and enjoy their golden years together.

Contact Thonglor Pet Hospital

Have questions about veterinary care for your pet in Thailand? Contact our team to ask about services, find a suitable branch or arrange an appointment.

If you need English-speaking assistance, please let us know when booking so we can confirm availability.

• Book an appointment: Schedule your visit

• Call us: +66 2 079 9999

• LINE: @jaothonglor

• Find a location: Explore our branches

For information about opening hours, treatment costs and preparing for your visit, see our Frequently Asked Questions.