The Collaborative International Dictionary of English v.0.48:

Wolfish \Wolf"ish\, a.
   Like a wolf; having the qualities or form of a wolf; as, a
   wolfish visage; wolfish designs.
   [1913 Webster] -- Wolf"ish*ly, adv. -- Wolf"ish*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

wolfish
    adj 1: resembling or characteristic (or considered
           characteristic) of a wolf; "ran in wolflike packs";
           "wolfish rapacity" [syn: wolflike, wolfish]
    2: devouring or craving food in great quantities; "edacious
       vultures"; "a rapacious appetite"; "ravenous as wolves";
       "voracious sharks" [syn: edacious, esurient, rapacious,
       ravening, ravenous, voracious, wolfish]

Moby Thesaurus II by Grady Ward, 1.0:

86 Moby Thesaurus words for "wolfish":
   Draconian, Tartarean, all-devouring, all-engulfing, animal,
   anthropophagous, atrocious, barbaric, barbarous, beastly, bestial,
   bloodsucking, bloodthirsty, bloody, bloody-minded, brutal,
   brutalized, brute, brutish, canine, cannibalistic, cruel,
   cruel-hearted, demoniac, demoniacal, devilish, diabolic,
   dog-hungry, doggy, empty, extortionate, famished, famishing,
   fasting, fell, feral, ferocious, fiendish, fiendlike, fierce,
   foxlike, foxy, grabby, grasping, grim, half-famished, half-starved,
   hellish, hungering, hungry, infernal, inhuman, inhumane, lupine,
   murderous, parasitic, peckish, pinched with hunger, predacious,
   predatory, rapacious, raptorial, ravening, ravenous, ruthless,
   sadistic, sanguinary, sanguineous, satanic, savage, sharkish,
   sharp-set, slavering, starved, starving, subhuman, truculent,
   unchristian, uncivilized, unfilled, unhuman, vicious, voracious,
   vulpine, vulturine, vulturous