Managing invasive species protects native wildlife welfare but involves killing introduced animals. Understanding this ethical tension is important for wildlife management.
Invasive species management presents one of conservation's most difficult welfare dilemmas: killing sentient, invasive animals to protect native wildlife welfare. Grey squirrels feel pain; American mink are sentient mammals. Killing them causes real welfare harms to individuals. Yet allowing them to persist causes ongoing welfare harms to native red squirrels, water voles, and seabirds at population scale. The utilitarian case for lethal control is often compelling when the native wildlife welfare benefits substantially outweigh the welfare costs of control. The ethical imperative is to use the most humane methods available, monitor welfare outcomes, and invest in developing non-lethal alternatives where scientifically feasible.