Dogs are living longer due to improved veterinary care and nutrition, but extended lifespan brings new welfare challenges. Understanding the biology of canine aging helps owners provide the best care for senior companions.
The welfare of aging dogs requires proactive, anticipatory care rather than reactive response to crisis. Pain is the most underaddressed welfare problem in senior dogs: osteoarthritis is so common as to be nearly universal in older large breeds, yet studies consistently show that owners and even veterinarians underestimate its prevalence and severity. A dog that moves slowly, hesitates at stairs, or is reluctant to play may not simply be tired — these behavioral changes often indicate chronic pain that is treatable. The welfare goal for senior dogs is compression of morbidity: maintaining high quality of life as close to end of life as possible, with a brief final decline rather than months or years of managed suffering. This requires regular veterinary assessment, proactive pain management using modern multimodal approaches, environmental modifications to ease mobility, maintained social engagement, and honest quality of life assessment as the end approaches.