The Collaborative International Dictionary of English v.0.48:

Animalization \An`i*mal*i*za"tion\, n. [Cf. F. animalisation.]
   1. The act of animalizing; the giving of animal life, or
      endowing with animal properties.
      [1913 Webster]

   2. Conversion into animal matter by the process of
      assimilation. --Owen.
      [1913 Webster]

WordNet (r) 3.0 (2006):

animalization
    n 1: a depiction in the form of an animal
    2: an act that makes people cruel or lacking normal human
       qualities [syn: brutalization, brutalisation,
       animalization, animalisation]