Five types of animals, always male, are considered acceptable for sacrifice: water buffalo, goats, sheep, chickens, and ducks.
en.wikipedia.org The rumen of the water buffalo has important differences from that of other ruminants.
en.wikipedia.org They prefer hunting large ungulates such as chital, sambar, gaur, and to a lesser extent also barasingha, water buffalo, nilgai, serow and takin.
en.wikipedia.org Being low in palatability, it was assisted in establishment by high densities of feral water buffalo, which were heavily overgrazing the floodplains.
en.wikipedia.org