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The second-longest venomous snake in the world is possibly the African black mamba (Dendroaspis polylepis), which can grow up to 4.5 m (15 ft). Among the genus Naja, the longest member arguably may be the forest cobra (Naja melanoleuca), which can reportedly grow up to 3 m (9.8 ft).
Ptyas luzonensis closely resembles Ptyas carinata (keeled rat snake) but differ through the following characteristics: [4] [5]. P. luzonensis has its dorsal body scales on the anterior third of its body arranged in 14 longitudinal rows, while P. carinata has 16 or 18 longitudinal rows.
The reticulated python is the largest snake native to Asia. More than a thousand wild reticulated pythons in southern Sumatra were studied, and estimated to have a length range of 1.5 to 6.5 m (4 ft 11 in to 21 ft 4 in), and a weight range of 1 to 75 kg (2 lb 3 oz to 165 lb 6 oz). [27]
The Philippine cobra is a stocky snake of medium length with long cervical ribs capable of expanding, so when threatened, a hood can be formed. The average length of this species is 1.0 metre (3.3 ft). [ 4 ]
Sexual size dimorphism in Eunectes is the opposite of most other vertebrates. Females are larger than males in most snakes, and green anacondas ( E. murinus ) have one of the most extreme size differences, where females average roughly 32 kg (70 lb) and males average only around 7 kg (15 lb).
Oligodon ancorus, commonly known as the northern short-headed snake, is a species of colubrid [1] [2] snake found on the islands of Luzon and Mindoro in the Philippines, as well as the island of Sumatra in Indonesia. However, whether the populations from Sumatra, described as Oligodon rhombifer, belong to this species has been contested. [2]
Ptyas mucosa, commonly known as the Oriental rat snake, [2] dhaman or Indian rat snake, [4] is a common non-venomous species of colubrid snake found in parts of South and Southeast Asia. Dhamans are large snakes. Typical mature total length is around 1.5 to 1.95 m (4 ft 11 in to 6 ft 5 in) though some exceed 2 m (6 ft 7 in).
The dorsum of the snake and the top of the head are dark brown in color, while the belly and bottom of the head are white or light cream yellow. The holotype for the species has a snout-to-vent length (SVL) of 56 cm (22 in), a tail that is 22.7 cm (8.9 in), and a total length of 78.7 cm (31.0 in). [ 3 ]