| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | monotreme | Western countries | Monotremes are a unique group of mammals that lay eggs. | 1 |
| 2 | monotreme | Western countries | Monotremes, such as the platypus and echidna, are fascinating and unique animals with primitive features that are of special interest to biologists and zoologists. | 1 |
| 3 | monotreme | Western countries | Monotremes are a rare group of mammals that lay eggs, including the platypus and echidna, and are found only in Australia and New Guinea. | 1 |