Saiga antelopes have experienced catastrophic mass mortality events driven by bacterial disease outbreaks — with climate change increasingly implicated as a trigger of these devastating die-offs.
Mass saiga die-offs represent welfare events of staggering scale compressed into very short time periods. In 2015, hundreds of thousands of animals died within days of each other — calves born that spring perished alongside their mothers in a sweeping die-off visible from satellite imagery. The speed and scale overwhelmed any possibility of individual rescue or intervention. The clinical presentation — sudden collapse, neurological signs, hemorrhaging — suggests significant acute suffering before death. The climate linkage means this welfare catastrophe is likely to recur with increasing frequency as Central Asian temperatures and humidity patterns shift. Preventing the next mass die-off requires both addressing poaching to maintain population resilience and climate mitigation to reduce the environmental trigger probability.