Anacondas in Colombia: Species, Facts & Where to See Them (2026)

Are there anacondas in Colombia? Yes! The Anaconda, this giant reptile that is part of the imaginary terror of children and adults, and that have been present, not only in your bad dreams but also in Hollywood and Disney movies live in Colombia. Find here when and where to go to see the Anaconda in Colombia.

The Anaconda: South America’s Largest Snake

The famous anaconda is a type of constrictor snake of the same lineage as the boas, and it is the heaviest of them all. It is endemic to the rivers of the South American tropics, usually found in the Amazon and Orinoco basins.

Although the name is applied to a group of snakes, it is often used to refer to the common or green anaconda (Eunectes murinus), which is the largest snake in the world by weight, and the second-longest after the reticulated python. Green anacondas display extreme sexual dimorphism — females average 4.6–5.2 meters and 30–70 kg, while males are considerably smaller at 2–3 meters and just 7–15 kg. The largest reliably measured specimens reach 5.5–6 meters, though unverified reports claim lengths up to 9 meters (Malayopython reticulatus), an endangered Asian snake. One of the differential characteristics of the Anaconda, when compared to other snakes, is that they have 3 thickened scales on each side of its snout. Additionally, Anacondas find comfort on trees or still water ponds with fast currents, taking advantage of their agile swimming abilities.

13 Fascinating Facts About Anacondas

1. Anacondas eyes and nostrils are elevated since they usually remain submerged underwater for long periods of time.
2. Their olfactory receptors are located on the tongue.
3. The mating season is usually between April and May. Females send signals and wait patiently until males arrive at her location. The number of males that may arrive could add up to 12 individuals which wrap themselves around the female creating the well-known “breeding balls”.
4. The gestation period takes 6 to 7 months, and the offsprings are born 60 to 70 cms long. The average number of hatchlings per female is 30 per mating season.
5. Anaconda hatchlings can survive without the mother’s protection, as they are born with innate hunting and self-defense instincts.
6. Being carnivorous, their diet is very varied.
7. Anacondas usually silently wait for their prey submerged on the river without being detected.
8. Anacondas are venomless snakes. Therefore, their mode of hunting is constriction, which is necessary to suffocate the prey before swallowing it.
9. The largest anaconda ever officially recorded was a female hunted in Brazil in 1960, which measured 8.45 m in length, and weighing 227 kg.
10. Anacondas swallow their prey completely thanks to elastic ligaments and joints in their snout.
11. They have two rows of teeth pointing backward, which move independently in order to bite their prey.
12. Digestion time can take more than 7 days depending on the size of the prey.
13. After eating a big prey, Anacondas may have no need to eat for weeks or even months.

Myths and Legends Around the Anaconda

The native communities of the Amazon region of Colombia believe that a great ancestral anaconda penetrated the universe/house, through the water gate and ascended the Negro and Vaupés rivers carrying within its body the ancestors of all mankind. Throughout his journey ancestors turned into humans. This great anaconda finally reached the “Ipanore waterfall”, formed by the flow of the Jirijirimo River, which means “the bed of the anaconda” in native dialects.

Encountering Anacondas: Safety and Behavior

Anacondas are non-venomous and generally avoid human contact. Attacks on humans are extremely rare and largely the product of sensationalized media. However, understanding their behavior is essential for safe wildlife observation:

• Keep a safe distance: Maintain at least 3–5 meters from any anaconda, especially large females. Never attempt to touch, pick up, or restrain an anaconda.
• Respect their habitat: Anacondas are ambush predators that rest partially submerged in shallow water or along riverbanks. Watch your step near water edges, especially during the dry season when they concentrate around remaining water sources.
• Follow your guide: Experienced local guides know anaconda resting spots and can read body language. A coiled anaconda with its head raised is alert; give it space.
• Defensive behavior: When threatened, anacondas may strike, bite, or release a foul-smelling musk from their cloaca. Their teeth are sharp but not dangerous — the main risk is from constriction, which only occurs when they mistake something for prey.

Anacondas are most active at night and during twilight, when they hunt. Daytime encounters typically involve resting individuals — these are the safest and best opportunities for observation and photography.

Are Anacondas Endangered?

Although there is no information on the conservation status of Anacondas, there are threats that are greatly reducing their populations. Threats to anacondas are:

1. Hunting, to keep them as pets or for their skin used as decoration. It is also hunted for religious and medicinal reasons., since it is believed to cure rheumatism and asthma, among other diseases.
2. Fear, derived from people’s belief that anacondas are dangerous.
3. Habitat loss.
4. Contamination.

Where to Find Anacondas in South America

Anacondas are widely distributed in South America and can be found in:

• Colombia
• Brazil
• Venezuela
• Ecuador
• Bolivia
• Peru
• Guyana
• French Guyana
• Trinidad and Tobago
• Paraguay

How Many Species of Anacondas Exist?

Among the genera Eunectes, there are three more species besides the famous Green Anaconda (Eunectes murinus), which is the species with the greatest presence in the South American continent, especially in Venezuela, Brazil, and Colombia. The other anaconda species are:

2026 update: 2024 taxonomy split (Eunectes akayima) + PNN El Tuparro Sendero Anaconda + dimorphism data

The major 2024 taxonomy change every anaconda article needs to reflect. In February 2024, Rivas et al. formally described Eunectes akayima — the Northern Green Anaconda — as a distinct species split from the Green Anaconda (Eunectes murinus), published in the peer-reviewed journal Diversity. Genetic evidence suggests the two lineages diverged approximately 10 million years ago. The northern species range covers Colombia, Ecuador, Venezuela, Trinidad, Guyana, Suriname and French Guiana — meaning the “green anacondas” of Colombia’s Llanos, Orinoquía and northern Amazon may now formally belong to E. akayima rather than E. murinus (the split’s nomenclatural procedures have been challenged in Bionomina, so we describe this as recently described rather than settled taxonomy). The name “akayima” comes from a Carib Indigenous language.

Where to see anacondas in Colombia in 2026 and the dimorphism numbers that make females so distinct. The primary access anchor is the “Sendero Anaconda” trail inside PNN El Tuparro (Vichada, ~548,000 ha, UNESCO Biosphere Reserve): 5 km upriver on the Río Tomo followed by roughly a 2-hour dry-forest hike. Best visited during the December-March dry season. Reservations must be arranged through ecoturismo.tuparro@parquesnacionales.gov.co. On the biology: green anacondas exhibit the greatest sexual size dimorphism of any terrestrial vertebrate — breeding females are at least 5× the mass of breeding males. Adult females average roughly 4.6 m and 50-70 kg, with exceptional individuals surpassing 200 kg; adult males typically reach only 2.5-3 m and less than 10 kg. IUCN status for E. murinus remains Least Concern; the newly described E. akayima has not yet received a separate assessment.