The Amazon River
dolphin is a freshwater dolphin, there is only 5 know species
in the 
world. The Amazon
River Dolphin is the biggest fresh water dolphin in the world.
Their diet consists of 43 species of 19 families of fish; this
is why they have three stomachs to digest these boney fish, turtles,
etc. They have an unfused vertebra in their spine so they can
move their head from side to side. No other cetacean has this
unfused vertebra. They are know in Peru as "Bufeo Colorado"
but the correct name is " Bufeo Rosado," meaning pink,
and not red. The Amazon River Dolphin is also known as "boto".
They can get up to 9 feet long or more. They usually weigh between
190-285 pounds.
Their echolocation ability is excellent. During
the rainy season, when the Amazon River floods, they swim amongst
the rainforest trees, which are under water. Unlike most dolphins
species, boto does not have dorsal fin. It has a ridge on its
back. The Amazon River Dolphin is born dark gray but turns pink
as it gets older. Scientists are not quite sure why. They often
hunt and feed alone, but are sometimes in-groups of 5-8. Baby
dolphins are called calves.
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