law: Prevention of Cruelty to Animals Act, 1960
  27. Exemptions. -
  Nothing contained in this Chapter shall apply
  
  to-
  (a) the training of animals for bona fide
  
  military or police purpose or the exhibition of any animals so trained; or
  (b) any animals kept in any zoological garden
  
  or by any society or association which has for its principal object the
  
  exhibition of animals for educational or scientific purposes.