Urban deer populations are growing in many cities, creating welfare questions about vehicle collisions, disease, supplemental feeding, and management approaches.
Urban deer welfare presents a complex picture. Protected from hunting, urban deer often live longer and in better body condition than rural deer. However, they face vehicle collision mortality, dog attack risk, and the welfare of dense, disease-concentrated populations in limited habitats. Well-intentioned supplemental feeding by residents causes welfare harm by concentrating deer at artificial food sources where disease transmission increases and deer develop dependencies incompatible with natural foraging. Urban deer management that includes vehicle collision prevention, disease surveillance, and managed fertility programs provides the best welfare outcomes for individual deer and population health.