Rainforest Hog-nosed Viper
Rainforest Hog-nosed ViperRainforest Hog-nosed ViperRainforest Hog-nosed ViperRainforest Hog-nosed Viper

Rainforest Hog-nosed Viper

Porthidium nasutum

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Tenorio Volcano National Park
18 Verified records at Tenorio Volcano National Park
November Best month highest sighting rate
☀️🌙 Day & Night When it's active Active throughout day and night

Common names: hognosed pit viper, hognosed pit viper, rainforest hognosed pit viper, horned hog-nosed viper. Porthidium nasutum is a pit viper species native to southern Mexico, Central America and northern South America. No subspecies are recognized as being valid. Wikipedia →

20–30% of wildlife watchers report a Rainforest Hog-nosed Viper sighting in Tenorio Volcano National Park, based on 18 days of visitor records from GBIF citizen-science data.

Closest Relatives at Tenorio Volcano National Park

Fer-de-lance
LC

Fer-de-lance

☀️🌙 Day & Night Reptile

Bothrops asper

40–50% · Likely
Side-striped palm pit viper
LC

Side-striped palm pit viper

🌅 Crepuscular Reptile

Bothriechis lateralis

Insufficient data
Central American Jumping Pit Viper

Central American Jumping Pit Viper

☀️🌙 Day & Night Reptile

Metlapilcoatlus mexicanus

5–10% · With luck

📅 Monthly Probability

10–20
Jan
40–50
Feb
30–40
Mar
40–50
Apr
<5
May
<5
Jun
20–30
Jul
20–30
Aug
5–10
Sep
30–40
Oct
40–50
Nov
<5
Dec

☀️🌙 When They're Spotted

Active throughout day and night · across all parks (global)

☀️🌙Day & Night
☀️🌙🌙12am6am12pm6pm12am

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 Pico Bonito National Park 🇭🇳 Honduras
30–40%
2 Tenorio Volcano National Park 🇨🇷 Costa Rica
20–30%
3 Braulio Carrillo National Park 🇨🇷 Costa Rica
20–30%
4 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
10–20%
5 Chagres National Park 🇵🇦 Panama
10–20%
6 Montes Azules Biosphere Reserve 🇲🇽 Mexico
10–20%
7 Cahuita National Park 🇨🇷 Costa Rica
10–20%
8 Arenal Volcano National Park 🇨🇷 Costa Rica
10–20%
9 Darién National Park 🇵🇦 Panama
10–20%
10 La Amistad International Park (Panama) 🇵🇦 Panama
<5%
11 Utría National Natural Park 🇨🇴 Colombia
Insufficient data
12 Tapantí-Macizo de la Muerte National Park 🇨🇷 Costa Rica
Insufficient data
13 Tortuguero National Park 🇨🇷 Costa Rica
Insufficient data

Quick answers

What are the chances of seeing a Rainforest Hog-nosed Viper in Tenorio Volcano National Park?

About 27% of wildlife watchers report a Rainforest Hog-nosed Viper sighting in Tenorio Volcano National Park, based on 18 days of visitor records from GBIF citizen-science data.

When is the best time to see Rainforest Hog-nosed Viper in Tenorio Volcano National Park?

November has the highest sighting rate for Rainforest Hog-nosed Viper in Tenorio Volcano National Park in our monthly data.

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