Dogs are living longer than ever due to advances in veterinary medicine, but extending lifespan without maintaining quality of life raises important welfare questions for aging companion animals.
Senior dog welfare requires active management rather than passive acceptance of decline. The normalization of "slowing down" in old dogs obscures the fact that many age-related changes involve chronic pain and treatable conditions. Cognitive dysfunction causes genuine disorientation, anxiety, and loss of learned behaviors — sources of genuine distress. Undertreated pain is pervasive in senior dogs because owners interpret reduced activity as normal aging. Quality-of-life frameworks (like the HHHHHMM scale or Ohio State's QOL scale) provide structured tools for assessing when a dog's good days outweigh bad ones. Timely, compassionate end-of-life decisions are among the most important welfare acts an owner can provide, preventing prolonged suffering at the end of life.