| Common Name | Scientific Name | Ecological Role | Distribution | Image | |
|---|---|---|---|---|---|
| Beef | Bos taurus | Domesticated livestock; grazing shapes grassland ecosystems. | Global (domesticated). | Details | |
| Human | Homo sapiens | Apex predator and ecosystem engineer; significantly alters environments through agriculture, urbanization, and resource extraction | Global, found on every continent including Antarctica (through temporary research stations) | Details |