mutt

from WordNet (r) 3.0 (2006)

mutt
    n 1: an inferior dog or one of mixed breed [syn: {cur},
         {mongrel}, {mutt}]

from The Collaborative International Dictionary of English v.0.48

mutt \mutt\ n.
   An dog that is of inferior quality or of mixed breed.

   Syn: cur, mongrel.
        [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

29 Moby Thesaurus words for "mutt":
      asshole, blockhead, boob, booby, chump, cur, dimwit, ding-a-ling,
      dingbat, dingdong, dolt, dope, dumbbell, galoot, goof, idiot,
      ignoramus, jerk, jerk-off, klutz, lurcher, mongrel, numskull,
      pariah dog, prize sap, sap, saphead, sawney, schlemiel

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