Sabah keelbackThe Sabah keelback is a nonvenomous colubrid endemic to Borneo.DescriptionAdults are about 54 cm in total length, of which about 18 cm is tail. Body slender; midbody scales 19, keeled; ventrals 149–157; subcaudals 92–101; dorsum olive-grey, with darker markings; a distinctive white to yellowish-cream spot on snout.Habitat and behaviorIt is frequently encountered in rivers in the plains and midhills, seen swimming with its head held out of water.DietIts diet includes frog eggs, tadpoles and frogs.ReproductionNothing is known about its reproductive biology.Geographic rangeIt is endemic to Borneo. It has been found in Brunei, Sabah and Sarawak.