Invasive species management involves lethal and non-lethal control of animals that are not native to an ecosystem, creating welfare tensions between individual animal suffering and ecological protection.
Invasive species welfare dilemmas pit the welfare of individual animals — often sentient and capable of suffering — against the welfare of native species, many of which are themselves declining or endangered. The utilitarian calculus is complex: many individual invasives may suffer in control programmes, but their presence causes ongoing suffering and death in native prey species and population collapse of native competitors. The welfare imperative is to minimise suffering in control operations through humane methods, explore non-lethal alternatives where feasible, and avoid introducing invasives in the first place through strong biosecurity.