The Amazon is home to more species of plants and animals than any other terrestial ecosystem on the planet -- perhaps 30% of the world's species are found there.
More than 300 species of mammal are found in the Amazon, the majority of which are bats and rodents.
The Amazon is home to the world's largest rodent, the capaybara which can weigh 200 pounds (91 kg).
Two species of freshwater dolphin live in the Amazon river.
Edentates -- including sloths, anteaters, and armadillos -- are common residents of the Amazon rainforest and only exist in the New World.