Here's a breakdown of their relationships:
* Genus: The black-footed ferret is the only species in the *Mustela* genus that is native to North America. Other species in the *Mustela* genus include the long-tailed weasel, the short-tailed weasel, the least weasel, and the ermine.
* Family: *Mustela nigripes* belongs to the Mustelidae family, which includes over 60 species worldwide.
* Order: They are part of the Carnivora order, which includes all mammals that are primarily meat-eaters.
So, while they are closely related to weasels, they are also part of a wider family that includes a variety of fascinating animals with unique adaptations.