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Black-Footed Ferret
Mustela nigripes

Photo: Adult male black-footed ferret
An adult black-footed ferret
Photograph courtesy Jeff Vanuga/Corbis

Black-Footed Ferret Profile

The black-footed ferret could also be called the black-eyed ferret because of the distinctive "stick-em up" mask that adorns its face. The tan ferrets also have black markings on their feet, legs, and tail tip.

This animal's long slender body, like that of a weasel, enables it to crawl in and out of the holes and dwellings of its primary prey—the prairie dog.

Though black-footed ferrets sometimes eat squirrels, mice, and other rodents, prairie dogs are essential to their survival, making up the majority of the ferret diet. These voracious predators hunt them in their own burrows, and take shelter in abandoned prairie dog dwellings.

Many prairie dog towns became ghost towns as populations underwent a 20th century decline. Farmers and ranchers (with government assistance) eliminated many prairie dogs because their underground complexes are destructive to fields. In the process, the black-footed ferret was nearly wiped out. In 1987, 18 animals were captured in the wild to begin a captive breeding program, which has since reintroduced ferrets into promising western habitats.

Ferret reintroduction efforts have been mixed. Populations need viable prairie dog towns to survive, but they also face threats from predators such as golden eagles, owls, and coyotes. Reintroduced animals lack some survival skills so their mortality rate is high. Diseases are another major threat to prairie dog towns and to the black-footed ferrets that depend upon them.

These solitary animals live alone, and in May and June females give birth to litters of one to six kits that they raise alone. The young are able to survive on their own by fall.

Fast Facts

Type: Mammal
Diet: Carnivore
Average lifespan in captivity: 12 years
Size: Head and body, 15 to 20 in (38 to 50 cm); Tail, 4.25 to 5 in (11 to 13 cm)
Group name: Business
Did you know? Ferrets are nocturnal, sleeping up to 21 hours per day and hunting prairie dogs primarily during the night.
Protection status: Endangered
Size relative to a 6-ft (2-m) man:
Illustration of the animal's relative size

Multimedia

feature

Photo: Prairie dogs

Photo of the Day: Prairie Companion

A mother prairie dog seems to be offering her pup a hug on the plains surrounding Devils Tower National Monument in Wyoming.

How You Can Help

Other Small Mammals

Map: Locator map for the black-footed ferret
 Black-Footed Ferret range

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