The Dog Aging Project and similar longitudinal studies are generating landmark findings about the biological and environmental factors that determine healthy aging in companion dogs.
Longitudinal dog aging research is producing welfare-relevant insights that challenge previous assumptions about what determines quality of life in senior dogs. The finding that social bond quality predicts healthy aging more strongly than exercise alone has profound implications for welfare prioritization in dogs with reduced mobility. Air pollution as a brain aging accelerant creates an environmental welfare dimension for urban dogs. The investigation of anti-aging interventions including rapamycin reflects a shift toward proactive welfare extension rather than only managing decline. These findings also provide direct translational value for human aging research, creating a reciprocal relationship between dog welfare science and human medicine.