Rewilding projects that reintroduce locally extinct species raise important welfare questions about the experiences of individual animals during reintroduction and establishment.
Rewilding creates a distinctive welfare situation: animals that are taken from captivity or relocated from other wild populations and released into environments where they must navigate unfamiliar territory, predators, competitors, and prey. The initial period is the highest welfare risk: animals may be disoriented, fail to find food, encounter territorial aggression from established individuals, or simply lack the behavioral repertoire for survival in the novel environment. Soft-release protocols — pre-release enclosures in the target habitat — reduce this transition stress and improve survival, but extend the captivity period. The long-term welfare outcome for successful reintroductions is positive: animals living in appropriate habitat with conspecifics, natural prey, and behavioral freedom represent genuine welfare improvement over captive living. The ethical calculus requires weighing short-term welfare costs of reintroduction against long-term welfare and conservation benefits.