The Collaborative International Dictionary of English v.0.48:

Vulpine \Vul"pine\ (?; 277), a. [L. vulpinus, from vulpes a
   fox.]
   Of or pertaining to the fox; resembling the fox; foxy;
   cunning; crafty; artful.
   [1913 Webster]

   Vulpine phalangist (Zool.), an Australian carnivorous
      marsupial (Phalangista vulpina syn. Trichosurus
      vulpina); -- called also vulpine phalanger, and
      vulpine opossum.
      [1913 Webster]

WordNet (r) 3.0 (2006):

vulpine
    adj 1: resembling or characteristic of a fox; "vulpine cunning"
           [syn: vulpine, vulpecular]