Managing invasive species to protect native biodiversity involves killing introduced animals, raising difficult welfare questions about the trade-offs between conservation goals and the welfare of individual invasive animals.
Invasive species management creates genuine welfare dilemmas. The introduced animals have the same capacity for suffering as any other member of their species, but their presence causes large-scale harm to native species through predation and competition. Killing methods used in invasive species management vary enormously in welfare outcomes: shooting by skilled operators causes rapid death, while some poison baits cause prolonged dying. The ethical weight of individual animal welfare is in tension with the welfare of many native species individuals and ecological integrity. Developing and deploying humane management methods is both an ethical obligation and practically important for maintaining public support for conservation management.