The Collaborative International Dictionary of English v.0.48:

Animalism \An"i*mal*ism\, n. [Cf. F. animalisme.]
   The state, activity, or enjoyment of animals; mere animal
   life without intellectual or moral qualities or objectives;
   preoccupation with sensual, physical, or carnal pleasures.
   [1913 Webster +PJC]

WordNet (r) 3.0 (2006):

animalism
    n 1: the doctrine that human beings are purely animal in nature
         and lacking a spiritual nature
    2: preoccupation with satisfaction of physical drives and
       appetites [syn: animalism, physicality]