The Collaborative International Dictionary of English v.0.48:

paddymelon \paddymelon\ n.
   1. Any of several small reddish-brown wallabies of scrubby
      areas of Australia and New Guinea, especially those
      belonging to the genus Thylogale.

   Syn: pademelon.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

paddymelon
    n 1: small reddish-brown wallabies of scrubby areas of Australia
         and New Guinea [syn: pademelon, paddymelon]