Animals of the Amazon: Mammals

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Monkey, Bearded Saki
Monkey, Brown Capuchin 
Monkey, Squirrel 
Monkey, Red Handed Howler
Monkey, Black Howler 
Night Monkey
Dolphin, Grey River 
Dolphin, Pink River 
Long Nosed Bat
Bulldog Fisheating Bat
Three Toed Sloth
Rat, Spiny 
Rat, Amazonian Bamboo
Porcupine
Peccary, Collared 
Peccary, White Lipped 
Ocelot
Giant River Otter
Capybara
Marsh deer
Deer, Red Brocket 
Red Rocket Deer
Tapir
Red Rumped Agouti
Coati Mundi

Source