Dog Senior Cognitive Dysfunction Syndrome

Canine Cognitive Dysfunction Syndrome is a progressive neurological condition in elderly dogs analogous to Alzheimer's disease in humans.

Key Facts

CDS affects an estimated 14-35% of dogs over the age of 8, with prevalence increasing sharply with age
Symptoms include disorientation, disrupted sleep-wake cycles, house soiling, altered social interactions, and anxiety
Diagnosis is clinical — a questionnaire-based tool called CADES or CCDR helps owners and vets assess severity
Selegiline (Anipryl) is licensed for CDS treatment in some countries and may slow progression
Environmental enrichment, regular mental stimulation, and dietary supplementation with antioxidants and omega-3s support cognitive health

Welfare Considerations

CDS causes significant suffering through confusion, anxiety, and loss of familiar routines. Dogs that become disoriented in their own homes, fail to recognise familiar people, or pace and vocalise through the night are experiencing genuine psychological distress. Early recognition and management improves quality of life and helps owners and dogs navigate the progressive changes together.

What You Can Do

Complete a CDS assessment questionnaire annually for dogs over the age of 8
Maintain predictable routines and avoid unnecessary environmental changes for dogs with cognitive decline
Discuss medical management options with your vet including selegiline and dietary supplements
Provide gentle daily mental enrichment appropriate to your dog's energy and cognitive level