The capture and transport of wild animals for research, relocation, or confiscation causes significant acute welfare harm that requires careful protocol design to minimize suffering.
Wildlife capture and transport welfare requires balancing the necessity of the operation against minimizing individual animal suffering. Capture myopathy — stress-induced muscle fiber breakdown that causes kidney failure — can kill animals days after apparently successful capture if stress was too extreme or prolonged. Chemical immobilization reduces capture stress when correctly performed but creates its own welfare risks from respiratory depression, hyperthermia from the absence of thermoregulatory behavior during immobilization, and aspiration. Best practice protocols include pre-capture preparation, rapid chemical induction, temperature monitoring throughout immobilization, reversal agent readiness, and immediate transport under appropriate conditions. The IUCN and wildlife veterinary organizations have developed detailed protocols that represent current best practice. Research that requires repeated capture of individual animals should minimize capture frequency and prioritize non-invasive monitoring methods.