Wolverines are opportunistic predators and scavengers whose seasonal food availability directly determines individual welfare, with winter carcass access and summer prey hunting both essential for survival.
Wolverines experience welfare challenges tied directly to food availability. In winters with poor prey availability or limited carrion from larger predators, wolverines face starvation - a prolonged, physically and psychologically painful process for these active, energy-demanding carnivores. Competition at carcasses with larger predators creates social stress and injury risk. Kits learning to hunt during their first year are particularly vulnerable to starvation if mothers cannot provide adequate prey. The fragmentation of wolverine habitat reduces their ability to access sufficient food within their home range, concentrating competition. The removal of large predators like wolves from ecosystems reduces the carrion availability that wolverines depend on in winter months.