Mustela nigripes is the scientific name for the black-footed ferret, a small carnivorous mammal that lives in prairies of Western North America. There are several synonyms for Mustela nigripes, including the American polecat and the prairie dog hunter. The black-footed ferret is a rare and endangered species due to habitat loss and disease epidemics among prey species such as prairie dogs. Conservationists have worked to reintroduce the species to its native range, and it is now making a gradual recovery. Mustela nigripes is an important predator in prairie ecosystems, and restoring its numbers helps to maintain biodiversity and ecological balance.