I say greatest enemy, for the Mus leucopus is the natural prey of the mustela erminea.
"Popular Adventure Tales"
Mayne Reid
Two or three kinds of large cats are said to have been seen; a mustela, something of the nature of the Lutreola, was shot near the Rio Sacramento.
"A New Voyage Round the World, in the years 1823, 24, 25, and 26, Vol. 2"
Otto von Kotzebue
mustela frenata nevadensis Hall.
"Mammals of the Grand Mesa, Colorado"
Sydney Anderson