Saiga antelopes experienced catastrophic mass mortality events linked to bacterial infection triggered by climate anomalies. Understanding these die-offs illuminates the intersection of wildlife welfare and climate change.
Saiga die-offs represent a catastrophic welfare event on a scale rarely seen — hundreds of thousands of individual animals dying from septicemia over a period of days. The death process from bacterial septicemia involves progressive organ failure with accompanying pain and distress. The calves dying alongside their mothers in the 2015 event were among the most acute individual welfare sufferers — young animals, often nursing, dying without the capacity to understand or respond to the threat. Climate change increasing the frequency of the temperature and humidity anomalies that trigger these events means this welfare catastrophe may recur. Conservation programs that monitor saiga health and enable early intervention represent the most direct available welfare response.