Pseudoboa neuwiedii
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~60% in a week ~90%
Pseudoboa neuwiedii, commonly known as the dark-headed red false boa or Neuwied's false boa, is a species of snake in the subfamily Dipsadinae of the family Colubridae. The species is native to northern South America. Pseudoboa neuwiedii is found on the mainland of South America from Colombia to The Guianas, and in Brazil along the Amazon River, as well as in Grenada, and Trinidad and Tobago.
The specific name, neuwiedii, is in honor of German naturalist Prince Maximilian of Wied-Neuwied. Pseudoboa neuwiedii grows to a maximum total length (tail included) of 1 m (39 in). Dorsally, it is reddish brown, either uniform or with some scattered small black spots. The top of the head and neck are black or dark brown. There may or may not be a yellowish crossband or collar across the temples and occiput. Ventrally, it is yellowish. This snake is venomous, but due the anatomy of its teeth it has difficulty in inoculating venom, its venom is highly proteolytic and could affect the coagulation by degrading the fibrinogen.
Pseudoboa neuwiedii is a powerful constrictor. Pseudoboa neuwiedii feeds on any animal... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago | |
| 2 | Tayrona National Natural Park | 🇨🇴 Colombia |
Possible
About 30% of wildlife watchers report a Neuwied's False Boa sighting in Main Ridge Forest Reserve on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 13th most-seen of the 24 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
June and November
In those months about 40% of wildlife watchers report a Neuwied's False Boa in Main Ridge Forest Reserve on a given day, against under 5% in December to April, the lowest months. Those are among Main Ridge Forest Reserve's wettest months, with about 200 mm of rain a month against 60 mm in February.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Neuwied's False Boa sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 2 parks where we can rate Neuwied's False Boa sightings, Main Ridge Forest Reserve has the highest daily chance: about 30%. Next come Tayrona National Natural Park (Colombia, about 10%).
Same family: Colubridae
The closest relatives of the Neuwied's False Boa that you can see in Main Ridge Forest Reserve (family Colubridae, Colubrid Snakes) are Venezuelan Cat-eyed Snake (about 30%), Black-backed Snake (about 30%) and Cloudy Snail-eating Snake (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Neuwied's False Boa is recorded against all the reptiles logged in Main Ridge Forest Reserve (9 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
