(Ptyas fusca)
Ptyas fusca, commonly known as the White-bellied Rat Snake or Brown Rat Snake, is a species of colubrid snake. It is found in Indonesia, Brunei, Malaysia, Thailand and Singapore. The White-bellied Rat Snake prefers forested habitats.They are known to prey on frogs and lizards and fish. It is known to remain still and hold neck erect when disturbed-a threatening posture. The adults range from brown to brick-red colour on the upper surface. Ventral scales are white to pale yellowish in colour. Thick black stripes on either side of the posterior body and tail is a characteristic feature. Juveniles often greenish in coloration. The pupil is rounded and large.