Mountain lions (cougars) are increasingly present at the urban-wildland interface across western North America, creating coexistence challenges, welfare risks from road mortality and conflict, and raising questions about how to manage large predators in fragmented landscapes.
Mountain lions at the urban edge face a set of welfare threats that are entirely human-created. Road mortality causes painful deaths or serious injuries. Mange, which spreads more readily in inbred, isolated populations trapped by freeways, causes prolonged suffering before death. Lions that prey on pets or livestock are often killed, and even non-lethal conflict management (live trapping, relocation) causes significant stress. The mountain lion situation illustrates how habitat fragmentation creates welfare harms that compound over generations — isolated populations become inbred, immunocompromised, and ultimately unviable. Investment in wildlife crossings and connected habitat represents both a conservation and a welfare intervention.