Introduced mammals:
| Mammals | Castor canadensis | beaver |
| Mammals | Hydrochaeris hydrochaeris | capybara |
| Mammals | Myocastor coypus | nutria |
| Mammals | Ondatra zibethicus | muskrat |
| Mammals | Otaria flavescens | South American sea lion |
| Mammals | Zalophus californicus | California sea lion |