The Collaborative International Dictionary of English v.0.48:

Ring-tailed \Ring"-tailed`\, a. (Zool.)
   Having the tail crossed by conspicuous bands of color.
   [1913 Webster]

   Ring-tailed cat (Zool.), the cacomixle.

   Ring-tailed eagle (Zool.), a young golden eagle.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ring-tailed cat
    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]