Wolverines depend on deep persistent snowpack for reproduction and food caching. Climate change is undermining this dependency in ways that threaten both welfare and survival.
The climate vulnerability of wolverines represents a welfare emergency in slow motion. Individual females attempting to den in increasingly unreliable snowpack face the welfare impact of reproductive failure — cubs born before snow has fully melted face fatal hypothermia when dens collapse prematurely. The food caching behaviour critical to wolverine energy budgets is disrupted when the snow that preserves cached food disappears too quickly. These are welfare harms experienced at the individual level — a mother whose den collapses, a juvenile unable to access cached food during a lean period — that accumulate into population-level decline. Unlike many conservation threats, the primary solution requires action at a global scale: reducing greenhouse gas emissions to preserve the climate conditions wolverines require.