Dhaman
Ptyas mucosa
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassSquamata
- FamilyColubridae (Colúbrids)
- GenusPtyas (Asian Rat Snakes)
- SpeciesPtyas mucosa (Dhaman)
Ptyas mucosa, commonly known as the Oriental rat snake, or Indian rat snake, is a common non-venomous species of colubrid snake found in parts of South and Southeast Asia. These 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 record length for this species was 3.7 m (12 ft 2 in), second only to their cousin Ptyas carinata among living colubrid snakes. Despite their large size, oriental ratsnakes are usually quite slender with even a specimen of 2 m (6 ft 7 in) commonly measuring 4 to 6 cm (1.6 to 2.4 in) only around in diameter. Furthermore, the average weight of ratsnakes caught in Java was around 877 to 940 g (1.933 to 2.072 lb), though larger males of over 2.3 m (7 ft 7 in) (which average mildly larger of the two sexes in the species) may easily weigh over 2.5 kg (5.5 lb). Wikipedia →
Closest Relatives at Taroko National Park
Chinese Green Snake
Ptyas major
Big-Eyed Ratsnake
Ptyas dhumnades
Red-banded Snake
Lycodon rufozonatus
Beauty Rat Snake
Elaphe taeniura
Kelung Cat Snake
Boiga kraepelini
False Habu
Pseudagkistrodon rudis
Collared Reed Snake
Calamaria pavimentata
King Ratsnake
Elaphe carinata
Mandarin Ratsnake
Euprepiophis mandarinus
Maki's Keelback
Hebius miyajimae
Kosempo Keelback
Hebius sauteri
Black-banded Trinket Snake
Oreocryptophis porphyraceus
📅 Monthly Probability
Fewer than 5 records of Dhaman at Taroko National Park — not enough to chart months honestly.
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Satpura National Park | 🇮🇳 India | |
| 2 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 3 | Yala National Park | 🇱🇰 Sri Lanka | |
| 4 | Minneriya National Park | 🇱🇰 Sri Lanka | |
| 5 | Chitwan National Park | 🇳🇵 Nepal | |
| 6 | Sundarbans National Park | 🇮🇳 India | |
| 7 | Bandhavgarh National Park | 🇮🇳 India | |
| 8 | Royal Bardia National Park | 🇳🇵 Nepal | |
| 9 | Periyar National Park | 🇮🇳 India | |
| 10 | Kanha National Park | 🇮🇳 India | |
| 11 | Mudumalai National Park | 🇮🇳 India | |
| 12 | Wilpattu National Park | 🇱🇰 Sri Lanka | |
| 13 | Nagarhole National Park | 🇮🇳 India | |
| 14 | Ba Be National Park | 🇻🇳 Vietnam | |
| 15 | Kaziranga National Park | 🇮🇳 India | |
| 16 | Keoladeo National Park | 🇮🇳 India | |
| 17 | Jim Corbett National Park | 🇮🇳 India | |
| 18 | Bandipur National Park | 🇮🇳 India | |
| 19 | Ranthambore National Park | 🇮🇳 India | |
| 20 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 21 | Taroko National Park | 🇹🇼 Taiwan | |
| 22 | Khao Yai National Park | 🇹🇭 Thailand |