Wolverines are among the most solitary and territorially demanding carnivores. Their extreme space requirements make them vulnerable to habitat fragmentation and human intrusion.
Wolverine territorial requirements are incompatible with fragmented, developed landscapes. Individuals attempting to cross human-dominated terrain during dispersal face high road mortality, exhaustion from navigating barriers, and the stress of unfamiliar environments without established food caches. Established territory holders in areas experiencing increasing human development show behavioral changes (nocturnality, reduced territory use near human activity) suggesting chronic stress avoidance. Protected area networks large enough to encompass full territory requirements are the essential welfare infrastructure for this species.