Mammal species are mammals excluding whales and porpoises. Threatened species are the number of species classified by the IUCN as endangered, vulnerable, rare, indeterminate, out of danger, or insufficiently known.
| 2018 | |
|---|---|
| Antigua/Barbuda | 2 |
| Argentina | 38 |
| Barbados | 3 |
| Belize | 10 |
| Bolívia | 21 |
| Brasil | 80 |
| Chile | 19 |
| Colômbia | 58 |
| Costa Rica | 11 |
| Cuba | 10 |
| Dominica | 3 |
| República Dominicana | 7 |
| Equador | 47 |
| El Salvador | 6 |
| Granada | 3 |
| Guatemala | 15 |
| Guiana | 11 |
| Haiti | 4 |
| Honduras | 8 |
| Jamaica | 7 |
| México | 96 |
| Nicarágua | 7 |
| Panamá | 17 |
| Paraguai | 10 |
| Peru | 53 |
| São Cristóvaõ e Neves | 2 |
| Santa Lúcia | 2 |
| São Vicente e Granadinas | 2 |
| Suriname | 9 |
| Bahamas | 5 |
| Trinidad e Tobago | 2 |
| Uruguai | 10 |
| Venezuela (República Bolivariana da) | 35 |
| Canadá | 18 |
| Estados Unidos de América | 40 |