The Collaborative International Dictionary of English v.0.48:

Cacomixle \Ca`co*mix"le\, Cacomixtle \Ca`co*mix"tle\, Cacomixl
\Ca"co*mix`l\, n. [Mexican name.]
   A North American carnivore (Bassaris astuta), about the
   size of a cat, related to the raccoons. It inhabits Mexico,
   Texas, and California.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cacomixle
    n 1: raccoon-like omnivorous mammal of Mexico and the
         southwestern United States having a long bushy tail with
         black and white rings [syn: bassarisk, cacomistle,
         cacomixle, coon cat, raccoon fox, ringtail, ring-
         tailed cat, civet cat, miner's cat, Bassariscus
         astutus]