| antilocapridae(noun, animal, fauna, species, family) |
| Canadian Shield(expression, area, type, ecoregion) |
| Eastern North America(expression, area, type, ecoregion) |
| Northern Mexico(expression, area, type, ecoregion) |
| Southwestern North America(expression, area, type, ecoregion) |
| Western North America(expression, area, type, ecoregion) |
| camelidae(noun, animal, fauna, family) |
| canidae(noun, animal, fauna, family) |
| equidae(noun, animal, fauna, family) |
| tapiridae(noun, animal, fauna, family) |
| tremarctinae(noun, animal, fauna, family) |
| pronghorn(noun, animal, fauna, species) |
| bear(noun, animal, fauna, species, mammal) |
| vampire bat(expression, animal, fauna, species) |
| Chihuahuan desert(expression, feature, area, desert, ecoregion) |
| Sonoran desert(expression, feature, area, desert, ecoregion) |
| heloderma(noun, animal, fauna, species, reptile) |
| opossum(noun, animal, fauna, species, mammal) |
| Middle Atlantic coastal forest(expression, forest, broadleaf, mixed, temperate) |
| Western Gulf coastal grassland(expression, forest, grassland, coniferous, ecoregion) |