Rani, R. UmaKalirajan, R.Vairavasamy, K.Muruganandan, B.TANUVAS2016-06-022016-06-022013-02http://krishikosh.egranth.ac.in/handle/1/66661Congenital duplication can be defined as imperfectly separated monozygotic twins with subsequent malformations ranging from partial duplication of one part of the body up to almost total formation of 2 fused fetii (Sinowatz, 2010). Diprosopus involves only duplication of the facial structures and discephalus involves complete cranial duplication resulting in two distinct heads (Hiraga et al., 1989). The present paper reports a rare case of 'diprosopus monauchenos' monster calf in a Holstein Friesian crossbred cow.enDystociaDiprosopus monauchenos calfCrossbred cowArticle