Proposals to reintroduce Eurasian lynx to UK forests have generated debate that includes welfare considerations for both lynx and their primary prey species, roe deer.
Lynx reintroduction raises fascinating multi-species welfare considerations. From the lynx perspective, captive-bred animals released into UK forests face significant initial welfare challenges: learning to hunt effectively, establishing territories without competing conspecifics to provide social learning, and adapting to unfamiliar prey and habitat. Reintroduced lynx from European populations have higher mortality rates than wild-born individuals during the establishment phase. From the prey perspective, the welfare calculus is complex: roe deer in the absence of predators suffer population overshoot followed by starvation and disease as populations exceed habitat carrying capacity. Regular predation by lynx, while representing individual prey deaths, may maintain deer populations at densities where individuals experience better average welfare through adequate food availability and lower disease transmission. The fear response evoked by predator presence has itself been argued to have ecological value, altering prey behaviour in ways that reduce overgrazing. Sheep farmers' concerns about livestock predation, while largely not borne out by European evidence, represent a legitimate welfare consideration for domestic animals and a practical barrier to reintroduction.