Animal welfare is not a static state but a dynamic experience across life phases. Understanding welfare across the life course of different species enables more comprehensive and meaningful welfare standards.
Welfare frameworks that only address adult maintenance conditions miss important dimensions of welfare across the full life course. Early life stress shapes neurobiological development in ways that affect welfare capacity throughout life. Reproduction, though natural, involves welfare stresses that management can mitigate. Old age brings chronic pain and functional decline that require proactive management. A comprehensive welfare framework addresses each life phase with appropriate standards and interventions.