Wild Mountain Lion Urban Coexistence Welfare

Mountain lions living in urban-wildland interface areas face unique welfare challenges from habitat fragmentation, road mortality, rodenticide poisoning, and human conflict that require innovative coexistence strategies to address.

Key Facts

Mountain lions are native to the Americas and range from Canada to Patagonia
Urban expansion has fragmented mountain lion habitat creating isolated populations with reduced genetic diversity
The famous P-22 mountain lion lived for 10 years in Griffith Park Los Angeles, isolated by freeways
Wildlife crossings over or under highways allow mountain lions to cross safely and maintain genetic connectivity
Rodenticide poisoning from secondary exposure to poisoned prey is a significant mortality source in urban areas
Mountain lions are generally shy and attacks on humans are extremely rare given the millions who share their habitat
The Wallis Annenberg Wildlife Crossing over the 101 Freeway in California was completed in 2023 as a model crossing

Welfare Considerations

Mountain lion welfare at the urban-wildland interface illustrates how connectivity and contaminant exposure are the most significant welfare determinants for large carnivores living near human development. Isolated mountain lions cannot access mates outside their local area, leading to genetic depression that reduces immune function and fertility. Road crossing attempts result in vehicle strikes that kill hundreds of mountain lions annually in California alone. Secondary rodenticide poisoning from eating prey that have consumed anticoagulant rodent baits causes internal hemorrhage and slow death in affected animals. The Wallis Annenberg Wildlife Crossing represents a major welfare investment for mountain lions and other wildlife by restoring connectivity across a major freeway that had severed population exchange for decades. Transitioning to second-generation rodenticide alternatives and supporting wildlife crossing construction are the highest-impact welfare interventions for urban mountain lions.

What You Can Do

Support wildlife crossing construction and funding through organizations like the National Wildlife Federation
Advocate for restrictions on second-generation anticoagulant rodenticides in mountain lion habitat areas
Use pest control methods that do not involve rodenticides that cause secondary poisoning of wildlife
Report mountain lion sightings to wildlife agencies to help track movement patterns and population health
Never feed wildlife near urban-wildland interfaces as this increases human-wildlife conflict risk
Learn about mountain lion ecology and coexistence to reduce fear-based responses to their presence