The mountain lion population around Los Angeles could become extinct in the next 50 years.
One stretch of highway is isolating a small group of the cats in the Santa Monica Mountains, away from the rest of their species. It's causing "inbreeding depression."
Inbreeding depression happens when small populations of a species lose diversity over time. And if this continues, experts say there's a 99.7 percent chance LA mountain lions will go extinct in the next 50 years.
But displaced mountain lions could cause a more immediate risk for people. Urbanization has forced the animals in some parts of the city to wander a little too close for comfort.
Last year, a mountain lion known to wildlife officials was found living under a person's home.
And in April, a mountain lion caused a lockdown at a California high school.
Solutions are in the works. Last year, city officials proposed a multimillion-dollar overpass for wildlife to help the cats avoid being hit by cars. That project is currently in development.