The Collaborative International Dictionary of English v.0.48:

animalistic \animalistic\ adj.
   1. of or pertaining to animalism.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

animalistic
    adj 1: of or pertaining to animalism

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "animalistic":
   Adamic, Circean, animal, animalian, animalic, beastlike, beastly,
   bestial, bodily, brutal, brute, brutelike, brutish, carnal,
   carnal-minded, coarse, dumb, earthy, fallen, fleshly, gross,
   instinctive, instinctual, lapsed, material, materialistic,
   mindless, nonrational, nonspiritual, orgiastic, physical,
   postlapsarian, subhuman, swinish, unspiritual, zoic, zooidal,
   zoologic