Wild Pumas and Urban Encroachment Welfare

Mountain lions living near urban edges in western North America face unique welfare challenges — fragmented territory, vehicle mortality, and rodenticide poisoning from suburban prey.

Key Facts

California has an estimated 4,000-6,000 mountain lions, many living near suburban areas
The Hollywood Hills puma P-22 lived his entire adult life in a 9 square kilometer fragment
Vehicle strikes are the leading cause of mountain lion mortality in southern California
Rodenticide poisoning from suburban rat control affects 90%+ of mountain lions tested in some areas
Wildlife crossings like the Wallis Annenberg crossing over the 101 freeway address habitat fragmentation

Welfare Considerations

Mountain lions on urban edges live constrained lives. Territories fragmented by freeways and development prevent natural dispersal and mate-finding, leading to inbreeding and increased conflict with humans. Rodenticide secondary poisoning — acquired through hunting prey that have ingested rat poisons — causes mange, neurological damage, and immune dysfunction. P-22's entire documented life in a 9 square kilometer fragment illustrates the welfare cost of habitat fragmentation for a species evolved to range over hundreds of square kilometers.

What You Can Do

Support the National Wildlife Federation Wallis Annenberg Wildlife Crossing funding
Advocate for wildlife corridor connectivity in regional land use planning
Eliminate second-generation rodenticides from urban pest control
Donate to National Wildlife Federation and California Department of Fish and Wildlife mountain lion monitoring
Drive cautiously at dawn and dusk near undeveloped open space adjacent to suburban areas