Rhabdophis spilogaster
Rhabdophis spilogaster , commonly known as the northern water snake or Boie's keelback , is a venomous keelback snake in the family Colubridae found in the Philippines on the islands of Catanduanes , Polillo , Calayan and in the province of Bataan on the island of Luzon . 
<triplet> keelback <subj> Colubridae <obj> parent taxon <triplet> Catanduanes <subj> Philippines <obj> country <triplet> Calayan <subj> Philippines <obj> country <triplet> Bataan <subj> Philippines <obj> country <triplet> Luzon <subj> Philippines <obj> country