 Home range sizes and overall cougar abundance depend on terrain , vegetation , and prey abundance . One female adjacent to the San Andres Mountains , for instance , was found with a large range of 215 km2 ( 83 sq mi ) , necessitated by poor prey abundance . Research has shown cougar abundances from 0 @.@ 5 animals to as much as 7 ( in one study in South America ) per 100 km2 ( 38 sq mi ) . 
 Home range sizes and overall cougar abundance depend on terrain , vegetation , and prey abundance . One female adjacent to the San Andres Mountains , for instance , was found with a large range of 215 km2 ( 83 sq mi ) , necessitated by poor prey abundance . Research <a href='been_done' title='1'><mark>has</mark></a> shown cougar abundances from 0 @.@ 5 animals to as much as 7 ( in one study in South America ) per 100 km2 ( 38 sq mi ) . 
Home range sizes and overall cougar abundance depend on terrain , vegetation , and prey abundance . One female adjacent to da San Andres Mountains , fa instance , was found wit a large range of 215 km2 ( 83 sq mi ) , necessitated by poor prey abundance . Research done shown cougar abundances from 0 @.@ 5 animals to as much as 7 ( in one study in South America ) per 100 km2 ( 38 sq mi ) .