Canine cognitive dysfunction syndrome (CDS) is a progressive neurological condition affecting elderly dogs, causing behavioral changes analogous to human Alzheimer's disease. Its recognition and management is critical for senior dog welfare.
CDS creates welfare challenges that are often invisible to owners because the condition develops gradually. Early signs - slight spatial disorientation, mild sleep disruption - are often attributed to normal aging. As the condition progresses, dogs lose recognition of familiar people, become distressed in familiar environments, vocalize at night, and lose housetraining. The anxiety and confusion that accompanies advanced CDS causes genuine psychological suffering - dogs that have been well-adjusted companions for years become chronically anxious and disoriented. Owner distress at watching a beloved companion lose cognitive function also affects the quality of care through emotional exhaustion. End-of-life decisions in CDS are particularly difficult because the physical body can remain relatively healthy while cognitive welfare deteriorates.