紅脖游蛇 Red-necked keelback

Rhabdophis subminiatus helleri. This is almost unique amongst snakes and animals as it is both venomous (with a deadly bite) and poisonous (as it can secrete the poison from the toads it eats from a groove in its neck). Nonetheless, this pretty snake is essentially harmless, as it very rarely bites and is not at all aggressive.