Pink Headed Reed Snake (Calamaria schlegli)
…a species of calamariine colubrid snake that occurs throughout Indonesia, Malaysia, Sumatra, Borneo and Java. C. schlegli is fossorial (burrowing) and active at night. Its diet consists mainly of terrestrial gastropods and frogs which are found in leaf litter. C. schlegli is often confused with the venomous Blue Malayan Coral Snake (Calliophis bivirgatus) due to its characteristic pink head.
Images: [wj] and Chan Kin Onn