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| English | Spanish |
| Galápagos giant tortoise | tortuga de las Galápagos (Geochelone nigra) |
| giant armadillo | tatú gigante (Priodontes maximus) |
| giant catfish | siluro gigante (Pangasianodon gigas) |
| giant otter | nutria brasileña (Pteronura brasiliensis) |
| giant otter | nutria gigante (Pteronura brasiliensis) |
| giant pied-billed grebe | somormujo de Atitán (Podilymbus gigas) |
| giant sable antelope | antilope negro gigante (Hippotragus niger variani) |
| giant salamanders | salamandra gigante (Andrias spp.) |
| giant salamanders | salamandras gigantes (Cryptobranchidae) |
| giant scops owl | autillo de Guerney (Mimizuku gurneyi) |