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| Subject | English | German |
| zool. | African tree squirrels | Palmenhörnchen (Funambulini) |
| mamm. | dwarf tree squirrel | Zwerghörnchen (Microsciurus alfari) |
| mamm. | dwarf tree squirrels | neuweltliche Zwerghörnchen (Microsciurus) |
| zool. | European and American tree squirrels | Eichkätzchen (Sciurus) |
| mamm. | European and American tree squirrels | Taghörnchen (Sciurus) |
| mamm. | European and American tree squirrels | Eichhörnchen (Sciurus) |
| zool. | ground and tree squirrels | Erd- und Baumhörnchen (Sciurinae) |
| mamm. | Guiana tree squirrel | Brasilhörnchen (Sciurus aestuans) |
| mamm. | Palearctic and American tree squirrels | Taghörnchen (Sciurus) |
| mamm. | Palearctic and American tree squirrels | Eichhörnchen (Sciurus) |
| reptil. | squirrel tree frog | Eichhörnchen-Laubfrosch (Hyla squirella) |
| mamm. | tree squirrels | Eichhörnchen (Sciurus) |
| mamm. | tree squirrels | Taghörnchen (Sciurus) |
| zool. | tree squirrels | Baumhörnchen (Sciurini) |