Saiga antelopes have experienced catastrophic mass mortality events, with the 2015 die-off killing over 200,000 animals in days, revealing extreme welfare vulnerabilities in this critically endangered species.
Mass mortality events in saiga represent acute welfare disasters of almost incomprehensible scale. Animals dying from hemorrhagic septicemia experience rapid clinical deterioration including respiratory distress, weakness, and multi-organ failure. The synchronous calving aggregations that create die-off vulnerability also mean that nursing females and dependent calves die simultaneously, with calves unable to survive without their mothers. The unpredictability and rapidity of die-off events makes veterinary intervention impossible at scale. Conservation welfare work focuses on monitoring systems to detect environmental triggers early, population management to reduce vulnerability, and long-term climate mitigation to reduce triggering event frequency.