Invasive species management often requires killing large numbers of animals, creating genuine welfare tensions between conservation goals and individual animal suffering.
The welfare of invasive animals sits in genuine tension with conservation imperatives. From a conservation perspective, invasive predators can cause catastrophic, irreversible damage to native species and ecosystems. From a welfare perspective, invasive animals are individuals capable of suffering, and lethal control methods vary enormously in their humaneness. The debate over whether conservation ends justify welfare-costly means is ongoing, with emerging welfare-sensitive approaches including trap-and-release programs, fertility control, and more humane kill methods. The welfare of both invasive and native species deserves consideration in management planning.