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The fauna in the reserve still represent viable populations of mammals that are rare or extinct in more populated areas. EcoCiencia identified 48 species of mammals in a two week inventory in 1997, but numbers are much higher – especially if including the bats.

Among the 48 species recorded in the inventory were (the number in parenthesis is the number of different species): opossums (2), anteater (1), sloths (2), armadillos (3), bats (17), monkeys (3), squirrels (3), agoutis (2), peccaries (2), deer (2), bush dog, coati, Neo-tropical otter, ocelot, tayra, kinkajou, olingo, paca, Brazilian rabbit,

Download mammals list here (PDF 0.5 MB)

Although many of the larger monkeys, tapirs and jaguars are very rare to absent due to hunting pressure, there have been regular sightings (2004-2009) of pumas, howler monkeys, saki monkeys, tamarin monkeys, nocturnal monkeys, kinkajous, squirrels, white-lipped and collared peccaries, ocelots, margay cats, sloths, anteaters, armadillos, coatis, agoutis, pacas, otters.

Many of the mammals are also frequently held as pets. The pets are often orphaned cubs when killing the mother during hunting. This is an old tradition and a way of the kids to get to know the species better. The impact from the domestic use among the indigenous communities is very low on populations. However, illegal pet trade in the Amazon in general is a constant threat to many species.