Anaconda
AnacondaAnacondaAnacondaAnaconda

Anaconda

Eunectes murinus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
40–50% · Likely
overall probability at Cuyabeno Wildlife Reserve
137 Verified records at Cuyabeno Wildlife Reserve
December Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

The green anaconda (Eunectes murinus), common anaconda, common water boa, akayima, or sucuri, is a boa species found in South America. It is one of the longest and heaviest known extant snake species. Like all boas, it is a non-venomous constrictor. Green anacondas generally have a life expectancy of 10 years in the wild, although some specimens live longer when they are taken care of in captivity. Green anacondas live in tropical rainforests and tend to prefer shallow, slow-moving waters, such as streams, rivers and flooded grasslands. They spend most of their time in the water but are also found on land in thick vegetation. Wikipedia →

40–50% of wildlife watchers report a Anaconda sighting in Cuyabeno Wildlife Reserve, based on 137 days of visitor records from GBIF citizen-science data.

Closest Relatives at Cuyabeno Wildlife Reserve

Garden Tree Boa
LC

Garden Tree Boa

🌙 Nocturnal Reptile

Corallus hortulana

30–40% · Possible
Western Rainbow Boa
LC

Western Rainbow Boa

☀️🌙 Day & Night Reptile

Epicrates cenchria

20–30% · Possible
Red-tailed Boa
LC

Red-tailed Boa

☀️ Diurnal Reptile

Boa constrictor

10–20% · With luck
Bates's Tree Boa
LC

Bates's Tree Boa

☀️🌙 Day & Night Reptile

Corallus batesii

Insufficient data

📅 Monthly Probability

30–40
Jan
40–50
Feb
40–50
Mar
50–60
Apr
30–40
May
30–40
Jun
40–50
Jul
50–60
Aug
30–40
Sep
30–40
Oct
40–50
Nov
50–60
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙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 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
40–50%
2 Yasuní National Park 🇪🇨 Ecuador
30–40%
3 Amacayacu National Natural Park 🇨🇴 Colombia
10–20%
4 Tambopata National Reserve 🇵🇪 Peru
5–10%
5 Sierra de la Macarena National Park 🇨🇴 Colombia
Insufficient data
6 Emas National Park 🇧🇷 Brazil
Insufficient data
7 Anavilhanas National Park 🇧🇷 Brazil
Insufficient data
8 Cordillera Azul National Park 🇵🇪 Peru
Insufficient data
9 Manu National Park 🇵🇪 Peru
Insufficient data

Quick answers

What are the chances of seeing a Anaconda in Cuyabeno Wildlife Reserve?

About 43% of wildlife watchers report a Anaconda sighting in Cuyabeno Wildlife Reserve, based on 137 days of visitor records from GBIF citizen-science data.

When is the best time to see Anaconda in Cuyabeno Wildlife Reserve?

December has the highest sighting rate for Anaconda in Cuyabeno Wildlife Reserve in our monthly data.

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