Polar bear maternal dens are among the most welfare-critical sites in the Arctic — disturbance during denning causes cub mortality and long-term reproductive failure.
Polar bear denning represents one of the most physiologically extreme and behaviorally vulnerable periods in mammalian life history. Welfare insults during this period — noise disturbance, den collapse from snow instability, human intrusion — have disproportionate consequences because the cubs are entirely altricial and cannot survive premature emergence. Conservation welfare management requires mandatory seismic exclusion zones around confirmed den sites and climate mitigation as the ultimate welfare intervention for the species.