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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Records | Conservation status | Notes | ||
| 1 | Crocodilia | Alligatoridae | Broad-snouted Caiman | Yacaré Overo | Jacaré-do-papo-amarelo | Caiman latirostris | Native | 1 | |||
| 2 | Yacare Caiman | Yacaré Negro | Jacaré-do-pantanal | Caiman yacare | Native | 1 | |||||
| 3 | Squamata | Boidae | Yellow Anaconda | Anaconda Amarilla | Anaconda-amarela | Eunectes notaeus | Native | 1 | |||
| 4 | Carnivora | Mustelidae | Neotropical Otter | Lobito de Río | Lontra longicaudis | Native | 1 |
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