Feel free to comment if i have forgott some Animals 
Amazon tree climber / Ranitomeya amazonica; (Syn .: Dendrobates amazonicus) - DD
Occurrence: NW Peru (Loreto), extreme SE Columbia and bordering Brazil, extreme S Guyana, Eastern French Guiana, Amazon estuary in Brazil
-----------------------------------------------------------------
Amazon toad head turtle * / Mesoclemmys raniceps; (Syn .: Phrynops raniceps); (Syn .: Batrachemys raniceps) * - NE
Occurrence: South America (SE Colombia, N Bolivia, Brazil (Amazon basin, Mato Grosso), Ecuador)
-----------------------------------------------------------------
Amazon manatee, (River manatee), (Amazon Manatee) ** / Trichechus inunguis ** - VU
Occurrence: Amazon basin, Brazil, Guyana, Colombia, Ecuador, Peru
Habitat: floodplains, rivers, canals
Total length: up to 300 cm
Weight: 450 kg
Food: aquatic and semi-aquatic vascular plants, palm fruits floating on water
-----------------------------------------------------------------
Amazon coati ** / Nasua nasua dorsalis **
Occurrence: Brazil (Amazon region), Peru, Ecuador
-----------------------------------------------------------------
Amazon Kunk ** / Conepatus semistriatus ** - LC
Head-torso length: 33 - 50 cm
Tail length: 13.3 - 30.9 cm
Weight: 1.4 - 3.5 kg
------------------------------------------------------------------
Brazilian dog head boa, (Bates dog head boa), (Green Amazon Dog Head Boa) * / Corallus batesi; (Syn .: Corallus batesii) * - LC
Occurrence: South America (Amazon region of Brazil, Peru, Bolivia, Ecuador and Colombia)
Habitat: predominantly forest edges and watercourses up to 1000 m above sea level
Total length: 200 - 250 cm
-----------------------------------------------------------------
Southern sun rail, (Amazon sun rail) / Eurypyga helias helias
Occurrence: Colombia, Venezuela, Guyana, Suriname, French Guiana southwards through Amazonia to O-Bolivia and Z-Brazil
-----------------------------------------------------------------
Amazon buzzard ** / Rupornis magnirostris magnirostris; (Syn .: Buteo magnirostris magnirostris) **
-----------------------------------------------------------------
Green ameive, (Amazon Racer) / Ameiva ameiva; (Syn .: Ameiva surinamensis) - LC
Occurrence: South America
-----------------------------------------------------------------
Great Amazon Duck * / Amazonetta brasiliensis ipecutiri *
Occurrence: S-Brazil south to N-Argentina and Uruguay
Weight: 565 - 623 g
A few More mentions
Amazon Green Rump Parrot * / Forpus passerinus deliciosus *
Occurrence: Eastern South America (N-Brazil: along both sides of the Amazon (east of the Rio Madeira) and Amapá)
Amazon Belt Snake ** / Imantodes lentiferus ** - LC
Occurrence: northern and western South America (Brazil: Amazon region; S-Columbia, Venezuela, French Guiana, Ecuador, Peru, Bolivia)
Amazon swamp rat, (Wagner's swamp rat) ** / Holochilus sciureus ** - LC
Occurrence: South America (Guyana, Suriname, French Guiana, O-Peru, N- and Z-Bolivia, N-, W- and Z-Brazil)
Head-torso length: 12.3 - 19.3 cm
Tail length: 11.5 - 17.8 cm
Amazonhokko, (Amazon Mitu) / Mitu tuberosum; (Syn .: Mitu mitu tuberosum); (Syn .: Crax tuberosa) - LC
Occurrence: SO Colombia (Amazon), Brazil (except large parts of the south of the Amazon and east to Maranhão), Peru (south of the Marañón), Bolivia (Pando, Beni, La Paz, Cochambamba, Santa Cruz)
Habitat: dense high forests, secondary bush
Tail length: 31.5 - 35.5 cm
Total length: 83 - 89 cm
Weight: 2.230 - 3.860 kg
Amazon ocelot ** / Leopardus pardalis melanurus **
Occurrence: northeastern South America (Venezuela eastwards to the Guiana Highlands), Central South America (Amazon basin), island of Trinidad
Habitat: tropical rainforest
Amazon tree climber / Ranitomeya amazonica; (Syn .: Dendrobates amazonicus) - DD
Occurrence: NW Peru (Loreto), extreme SE Columbia and bordering Brazil, extreme S Guyana, Eastern French Guiana, Amazon estuary in Brazil
-----------------------------------------------------------------
Amazon toad head turtle * / Mesoclemmys raniceps; (Syn .: Phrynops raniceps); (Syn .: Batrachemys raniceps) * - NE
Occurrence: South America (SE Colombia, N Bolivia, Brazil (Amazon basin, Mato Grosso), Ecuador)
-----------------------------------------------------------------
Amazon manatee, (River manatee), (Amazon Manatee) ** / Trichechus inunguis ** - VU
Occurrence: Amazon basin, Brazil, Guyana, Colombia, Ecuador, Peru
Habitat: floodplains, rivers, canals
Total length: up to 300 cm
Weight: 450 kg
Food: aquatic and semi-aquatic vascular plants, palm fruits floating on water
-----------------------------------------------------------------
Amazon coati ** / Nasua nasua dorsalis **
Occurrence: Brazil (Amazon region), Peru, Ecuador
-----------------------------------------------------------------
Amazon Kunk ** / Conepatus semistriatus ** - LC
Head-torso length: 33 - 50 cm
Tail length: 13.3 - 30.9 cm
Weight: 1.4 - 3.5 kg
------------------------------------------------------------------
Brazilian dog head boa, (Bates dog head boa), (Green Amazon Dog Head Boa) * / Corallus batesi; (Syn .: Corallus batesii) * - LC
Occurrence: South America (Amazon region of Brazil, Peru, Bolivia, Ecuador and Colombia)
Habitat: predominantly forest edges and watercourses up to 1000 m above sea level
Total length: 200 - 250 cm
-----------------------------------------------------------------
Southern sun rail, (Amazon sun rail) / Eurypyga helias helias
Occurrence: Colombia, Venezuela, Guyana, Suriname, French Guiana southwards through Amazonia to O-Bolivia and Z-Brazil
-----------------------------------------------------------------
Amazon buzzard ** / Rupornis magnirostris magnirostris; (Syn .: Buteo magnirostris magnirostris) **
-----------------------------------------------------------------
Green ameive, (Amazon Racer) / Ameiva ameiva; (Syn .: Ameiva surinamensis) - LC
Occurrence: South America
-----------------------------------------------------------------
Great Amazon Duck * / Amazonetta brasiliensis ipecutiri *
Occurrence: S-Brazil south to N-Argentina and Uruguay
Weight: 565 - 623 g
A few More mentions
Amazon Green Rump Parrot * / Forpus passerinus deliciosus *
Occurrence: Eastern South America (N-Brazil: along both sides of the Amazon (east of the Rio Madeira) and Amapá)
Amazon Belt Snake ** / Imantodes lentiferus ** - LC
Occurrence: northern and western South America (Brazil: Amazon region; S-Columbia, Venezuela, French Guiana, Ecuador, Peru, Bolivia)
Amazon swamp rat, (Wagner's swamp rat) ** / Holochilus sciureus ** - LC
Occurrence: South America (Guyana, Suriname, French Guiana, O-Peru, N- and Z-Bolivia, N-, W- and Z-Brazil)
Head-torso length: 12.3 - 19.3 cm
Tail length: 11.5 - 17.8 cm
Amazonhokko, (Amazon Mitu) / Mitu tuberosum; (Syn .: Mitu mitu tuberosum); (Syn .: Crax tuberosa) - LC
Occurrence: SO Colombia (Amazon), Brazil (except large parts of the south of the Amazon and east to Maranhão), Peru (south of the Marañón), Bolivia (Pando, Beni, La Paz, Cochambamba, Santa Cruz)
Habitat: dense high forests, secondary bush
Tail length: 31.5 - 35.5 cm
Total length: 83 - 89 cm
Weight: 2.230 - 3.860 kg
Amazon ocelot ** / Leopardus pardalis melanurus **
Occurrence: northeastern South America (Venezuela eastwards to the Guiana Highlands), Central South America (Amazon basin), island of Trinidad
Habitat: tropical rainforest