Historically, mountain lions had the most extensive distribution of all American terrestrial mammals. They ranged from coast to coast in North America, and from southern Argentina and Chile to southeastern Alaska. Extermination efforts, hunting pressure, and habitat destruction have restricted their range to relatively mountainous, unpopulated areas throughout much of their range. Populations in eastern North America were entirely exterminated, except for a small population of Florida panthers (Puma concolor coryi). In recent years populations have begun to expand into areas of human habitation, especially in the western United States. Mountain lions are now fairly common in suburban areas of California and have recently been sighted as far east as urban Kansas City, Missouri, where several have been hit by cars. Mountain lion sightings in eastern North America, outside of southern Florida, are still more likely to be escaped or abandoned "pet" mountain lions or other large cats.
Biogeographic Regions: nearctic (Native ); neotropical (Native )