black-footed ferret

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A nocturnal North American weasel (Mustela nigripes) having yellow and brown fur with a black mask and feet.

from the GNU version of the Collaborative International Dictionary of English.

• noun a weasellike mammal (Mustela nigripes) inhabiting the western North American prairie, having dark feet, a dark-tipped tail, and a dark face on a yellowish-brown coat. It is an endangered species.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun musteline mammal of prairie regions of United States; nearly extinct