Animals That Live Only in the Amazon River

Amazon River Animals Most Dangerous – Amazon river animals are subject to many fantasies. If we appreciate the good companionship of pink dolphins and giant otters, we have got every reason not to trust caymans and other terrifying creatures that inhabit this river of legend.

Caymans is an Amazon River Animals Most Dangerous

Amazon River Animals

caiman-museau-largeCayman are among the biggest reptiles in the world and can reach up to 6-7 meters long.

These reptiles spend a great part of their time still in the water, we can only see their eyes and nostrils. However, they can neither breathe nor swallow their food in the water.

caiman-teteLike all reptiles, they are cold-blooded animals: their body is at the same temperature as the environment in which they live.

Caymans are big carnivores. They not only eat fish from rivers where they live but also small animals that come to drink.

This is a very common animal in Brazil, particularly in Pantanal and Amazon basin.

Otters are Amazon River Animals Otters are Amazon River Animals

loutre-mangeThere are no other Amazon river animals as fun to watch as river otters when they are with their family.

Young otters are very playful and they love to slide along a muddy slope until the water…

loutre-brancheOtters are beautiful mammal with fur, related to the weasel, but suitable for aquatic life. It has a hydrodynamics body, small ears, long tail, slender and powerful that serves itself as a rudder, and webbed feet.

the loutre-nageIts short and thick fur is fat and waterproof. An adipose layer enables it to maintain the internal temperature despite the low temperature of the water. The giant Amazon otter can reach up to 1.50 m and weigh up to 30 kg.

pink dolphin

pink dolphin

boot pink dolphins are Amazon river animals that are about 2.80 meters and weigh around 150 kg. They are easily recognized by the pink color from their belly.

Their population is estimated at approximately 100,000 species. They usually live in a couple or in groups not exceeding 6 dolphins.

They are frightened little animals, that do not dare eating food offered by tourists.

boto-eau2An Amazonian legend claims that botos can take human form. They appear in parties under the feature of an attractive man, dressed in white, delicately scented, and always wearing a hat to hide the hole through which it breathes.

Botos are known to be perfect dom Juan, inviting women for sensual dances before sharing their bed … and to go away quietly before dawn! A convenient legend…

Boas and Anacondas are Amazon River Animals


anacondachinoisBoas are the largest snakes in the world (with pythons, in Africa). The constrictor boa can exceed 7 meters long. They are not poisonous and feed themselves on small mammals that they squeeze until they break their bones.

Then, thanks to the power they have, to be able to distend their mouth and throat, they swallow their entire prey, head first, without chewing. Then they digest them slowly over a long sleep. They can be captured and tamed easily.

anaconda-teteAnacondas are probably the most frightening Amazon river animals. They are closely related to boas. They are also constrictors, non-venomous, and can reach enormous sizes (up to 9 meters for females). Although a bit shorter than the reticulated pythons, they are much more massive and can blithely exceed 200 kg.

anaconda-digestion are nocturnal hunters that eat all kinds of prey (caiman, capybaras, deer, sheep, dogs, tortoises, etc..) and are not scared to attack powerful predators such as the jaguar.

However, they take about 5 hours to swallow a big capybara and 5 days to digest it, during this period they are very vulnerable. More surprisingly, anacondas are capable of fasting for two years and can live more than 50 years.

Iguanas are Amazon River Animals


iguana-vertIguanas formed part of the largest family of lizards in America (about 750 species). The biggest one of them is the green iguana, it can reach up to 3 meters long. The major part of the iguana’s body consists mainly of the tail which they use as a whip if they are being attacked.

iguana is often found perched on trees and takes pleasure in letting itself fall noisily undergrowth or directly into the water. Most iguanas lay their eggs on the ground or in rotten wood (it is a delicacy!). Some are viviparous.



Marinette-single frog lays eggs, coated with a transparent jelly, in standing water. These eggs hatch and give birth to tiny tadpoles that breathe through gills and have long tails.

crapaud-buffle2In general, frogs have smooth skin while those of the toads are pustular. Also, the frog has a more slender body than the toad.

All toads and frogs male have a vocal sac. Their tongue is fixed to the front of the mouth, unlike humans. This allows them to throw up their tongue ​​far.

dendron Dendrobates or poison frogs, that we can find in South America, have skin that secretes a very powerful toxic venom that the indigenous use for brushing the tips of their arrows. This poison kills almost immediately.


capybaras-Bebe-pleinThe capybara or water pig is the biggest rodent in the world. Its weight can reach up to 50 kg. It is a harmless and shy animal that lives by a troop often in marshes or along rivers and lakes of South America. It feeds itself on aquatic plants. It is an excellent swimmer … and a slice of meat which is in great demand by Jaguars!

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