Cognitive dysfunction syndrome in older dogs is a progressive neurological condition similar to Alzheimer's disease in humans, causing disorientation, sleep disturbances, and personality changes that significantly affect quality of life.
Cognitive dysfunction profoundly affects a dog's quality of life and the bond with their family. Affected dogs experience genuine confusion, anxiety, and distress — waking in the night disoriented, getting stuck in corners, failing to recognise familiar people. This also causes significant secondary stress responses. Early recognition is critical because interventions begun before severe decline can meaningfully extend good-quality life. Welfare assessment in CDS dogs should incorporate both behavioural observation and validated quality-of-life scales. Owners need substantial support to understand that behaviours are neurological in origin, not wilful or trainable away, and to make informed end-of-life decisions.