Enteritis is the major cause of mortality and morbidity in captive non-human primates. Acute diarrhoea is most often associated with the bacterial pathogens (Hird et al., 1984, Russell et al., 1987, Russell et al., 1989, Miller et al., 1990 and Rajani et al., 1992). During quarantine peroid most of the animals exhibit diarrhoea, usually nonspecific which may be due to change of feed. But some times it is due to bacteria like Shigella, pathogenic strains of E. coli and results in haemorrhagic enteritis (Sline et al., 1992, Thomson and Scheffer, 1996). The major clinical finding in enteritis are diarrhoea, pyrexia, abdominal pain, septicemia and toxemia and in acute enteritis the faeces contain blood. This study was undertaken to test the efficacy of three haemostatic agents viz: Carbazachrome, Snake Venom and Feracrylum for haemorrhagic enteritis in bonnet monkeys and also to estimate the effective dose of Feracrylum.