The Amazon River Dolphin, is a freshwater river dolphin endemic to the Orinoco, Amazon and Araguaia/Tocantins River systems of Brazil, Bolivia, Peru, Ecuador, Colombia and Venezuela. The largest of the river dolphins, this species is not to be confused with the Tucuxi (Sotalia fluviatilis), whose range overlaps that of the Amazon River Dolphin but is not a true river dolphin. The neck vertebrae of the Amazon River Dolphin are not fused together, and therefore the Boto is able to bend its neck in a 90 degree angle to its body, and skillfully hunt fish in the flooded forest.
