List of mammals of Brazil

Brazil has the largest mammal diversity in the world, with more than 600 described species and more likely to be discovered.

According to the International Union for Conservation of Nature, 66 of these species are endangered, and 40% of the threatened taxa belong to the primate group.

658 species are listed.

[1] The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature: Some species were assessed using an earlier set of criteria.

Species assessed using this system have the following instead of least concern categories: