Snakes of Rizal: 23 Species in the Sighting Record
Snakédex has logged 2,378 snake sightings in Rizal, of which 1,360 have been verified to a species, covering 23 different kinds. The non-venomous common wolf snake, Lycodon capucinus, leads with 474 sightings, followed by the endemic Luzon brown ratsnake at 270 and the highly venomous Northern Philippine cobra, Naja philippinensis, at 131. Of verified sightings, about 76% are non-venomous, 12% highly venomous, 10% mildly venomous, and 2% venomous.
How many snakes has Rizal recorded
Rizal has 2,378 snake sightings logged in Snakédex, and 1,360 of those have been verified down to a specific species. Between them, the verified records cover 23 different species.
Rizal sits right against the eastern edge of Metro Manila, folding dense towns like Antipolo and Cainta into hillier, more forested terrain toward Tanay and the Sierra Madre foothills. That mix, city blocks next to patches of upland forest, puts a lot of people within reach of a lot of snake habitat, which is a large part of why the sighting count runs as high as it does.
The common wolf snake and the Luzon brown ratsnake lead the record
One species dominates Rizal's record: the common wolf snake, Lycodon capucinus, with 474 verified sightings, close to a third of every verified sighting in the province. It is non-venomous and shows up almost anywhere people live, wall gaps, stacked lumber, garden beds, hunting geckos and small lizards after dark. Its dark, banded juveniles get mistaken for young cobras often enough that this is likely part of why it gets reported so much.
Behind it comes the Luzon brown ratsnake, Coelognathus erythrurus manillensis, with 270 sightings and endemic to the Philippines. It is a long, fast colubrid that will lift its foreparts and hiss loudly when startled. That display is a bluff, since the species carries no venom to back it up.
Is the Philippine cobra common in Rizal
The Northern Philippine cobra, Naja philippinensis, ranks third in the Rizal record with 131 verified sightings. It is endemic to the Philippines and belongs to family Elapidae, front-fanged snakes with venom that acts on the nervous system. A cornered cobra typically raises its foreparts and spreads its hood as a warning before doing anything else, and it will retreat if it has room to do so.
A much rarer relative also turns up in the record: the Luzon king cobra, Ophiophagus salvatana, endemic and highly venomous, with 26 sightings. Together the two species make up the 160 sightings classed as highly venomous in Rizal's 1,360 verified total.
None of this is advice on identifying or treating a bite. A suspected bite from a cobra, or from any snake, is a medical emergency. Get to a hospital immediately. Do not attempt first aid at home, and do not try to catch, handle, or kill the snake responsible.
The Philippine dwarf snake is Rizal's fourth most reported species
The Philippine dwarf snake, Calamaria gervaisii, endemic and non-venomous, sits fourth on the list with 117 sightings. It is small, smooth-scaled, and spends most of its life burrowed in loose soil and leaf litter, only showing up on the surface after rain or when digging turns one up. A count that high for a species this secretive suggests Rizal's gardens and vacant lots get a lot of digging and turning over of debris, not that dwarf snakes are unusually easy to find.
What else turns up in the mildly venomous and venomous categories
Rizal's mildly venomous sightings, 141 of the verified total, are led by the paradise tree snake, Chrysopelea paradisi, with 91 sightings. It is a rear-fanged glider that flattens its body into a shallow curve to move between tree branches and is not considered dangerous to people. The dog-toothed cat snake, Boiga cynodon, adds 22 sightings, and the endemic Philippine whip snake, Dryophiops philippina, adds another 17, a slim, fast-moving hunter of lizards.
The venomous category proper, separate from the highly venomous elapids, holds 26 sightings, all of them the Philippine barred coral snake, Hemibungarus calligaster, endemic. Coral snakes spend most of their time hidden underground or under leaf litter and are rarely seen out in the open, which makes each sighting worth a closer look.
The quieter species in Rizal's record
Past the top few names, the list runs long and thin. The reticulated python, Malayopython reticulatus, has 35 sightings, the red-tailed green rat snake, Gonyosoma oxycephalum, has 33, and the endemic lined triangle-spotted snake, Cyclocorus lineatus, has 30.
The Brahminy blind snake, Indotyphlops braminus, sits at 28 sightings despite being tiny and living almost entirely underground. It is often mistaken for an earthworm and only gets noticed when soil is disturbed. Rounding out the list are Maren's bronzeback, Dendrelaphis marenae, at 23 sightings, and the endemic Luzon kukri snake, Oligodon ancorus, at 11, both non-venomous and far less likely to cross a path than the wolf snake or the ratsnake.
What this list does and does not tell you
Read Rizal's numbers as a record of what got photographed and confirmed, not a count of what actually lives in the province. A wolf snake turning up in yards and under debris is going to get photographed far more than a python moving through forest edge at night, regardless of which one is actually more numerous where. The gap between 2,378 total submissions and 1,360 verified ones matters too: some photos are too blurry, too brief, or too close to another species to confirm.
Most of the snakes on this list want nothing to do with people and will move off if given the chance. If you find one in Rizal, venomous or not, the safest move is the same every time: leave it alone and step back rather than trying to catch or kill it.
To see exactly where these sightings were recorded across the province, open the Snakédex map. If you want to practice telling Rizal's most commonly confused species apart, try Who's That Snake?. </content>