Wolverines are one of the most climate-vulnerable mammals in North America, entirely dependent on persistent spring snowpack for denning and kit survival — a habitat requirement that is disappearing rapidly as temperatures rise across their range.
The welfare impacts of climate change on wolverines operate through habitat loss rather than direct physical harm, but the suffering this causes is real. As snowpack becomes unreliable and denning sites fail to persist until kits are independent, reproductive failure increases and populations decline. Wolverines that fail to find adequate snow for caching food may experience nutritional stress during critical periods. The slow reproductive rate means that individual animals lost to climate stress are not quickly replaced. While individual welfare events are harder to observe than in species with human contact points, the gradual deterioration of conditions for a small, isolated population represents cumulative individual suffering across the population.