The relationship between Canada lynx and snowshoe hares is one of ecology's most dramatic cycles, with both species experiencing significant welfare impacts tied to population booms and crashes.
Both species in this predator-prey dynamic experience profound welfare challenges. Lynx face cyclical starvation - a slow, agonizing death during hare crashes. Hares endure intense predation pressure, and research shows their stress hormone levels remain elevated for years after population crashes, even when predators are absent, suggesting lasting psychological harm. At peak densities, hares suffer food deprivation and disease outbreaks. Climate change is disrupting the synchrony of this cycle, potentially creating mismatched peaks that worsen outcomes for both species.