A case of Oligodon ocellatus eating a toxic adult toad, Duttaphrynus melanostictus, in Cat Tien National Park, southern Vietnam, is provided. We found a kukri snake having buried its head deeply into the abdomen of the toad and probably being in the process of eating organs. Subsequently, the toad was swallowed whole and the kukri snake moved away and disappeared with the toad’s hind feet still visible from its mouth. It is hypothesised that the behaviour of eviscerating or piercing anurans to eat their organs has been developed in the O. cyclurus species group or clade. This has now been observed in three species.