Physiological and behavioural stress in wild animals is an underappreciated welfare issue with both individual and population-level consequences.
Stress in wild animals causes welfare harm at the individual level while also having population-level conservation consequences through effects on reproduction, immunity, and survival. Anthropogenic stressors including noise, habitat disturbance, and food insecurity are increasingly significant as human footprints expand. Welfare-conscious conservation and planning considers stress reduction for wild animals alongside habitat protection.