Rhabdophis is a genus of snakes in the subfamily Natricinae of the family Colubridae. Species in the genus Rhabdophis are generally called keelback snakes, and are found primarily in Southeast Asia. Rhabdophis is often thought of as completely harmless, but there are several cases of severe envenomation and at least one recorded fatality from the Japanese species. The symptoms have been compared to those of highly venomous African colubrids such as the Boomslang. Similar reports exist for other species of the genus, which also make reference to the highly hemorrhagic nature of the venom. There is a supposed antivenom in Japan, but not in other countries. (Source: Wikipedia.org, CC BY-SA)