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| English | Spanish |
| Brazilian otter | nutria gigante (Pteronura brasiliensis) |
| Brazilian otter | nutria brasileña (Pteronura brasiliensis) |
| Californian sea otter | nutria de mar californiana (Enhydra lutris nereis) |
| giant otter | nutria brasileña (Pteronura brasiliensis) |
| giant otter | nutria gigante (Pteronura brasiliensis) |
| long-tailed otter | nutria de cola larga (Lontra longicaudis) |
| marine otter | nutria marina (Lontra felina) |
| Southern river otter | nutria chilena (Lontra provocax) |
| Southern sea otter | nutria de mar californiana (Enhydra lutris nereis) |
| southern sea otter or California sea otter | nutria de mar californiana (Enhydra lutris nereis) |