The fisher, a large mustelid once nearly extirpated from much of its range by trapping and logging, is recovering in some regions through reintroduction and habitat protection, but still faces significant threats.
Fisher welfare reflects the broader story of North American forest predator recovery. Individuals re-introduced to unfamiliar landscapes face the stress of establishment in new territories. Rodenticide poisoning from illegal cannabis grows causes slow, painful deaths from internal hemorrhaging. Fishers caught in traps set for other species suffer trap-related injuries and distress. Habitat fragmentation forces fishers into smaller territories where food competition and road mortality increase. The success of fisher reintroduction programs demonstrates that recovery is possible when root causes are addressed, but ongoing welfare threats from rodenticide poisoning and trapping must be resolved for populations to thrive long-term.