| 1 | The female platypus lays eggs like a bird. | |
| 2 | On the average, a platypus eats as much food as half of its own weight every day. | |
| 3 | Even so, the platypus genome reveals the animal held onto genes for odor-detection. | |
| 4 | The echidna is such a unique animal that it is classified in a special class of mammals known as monotremes, which it shares only with the platypus. | |
| 5 | The platypus, also known as duckbill for the shape of its mouth, is one of the oldest animals in the world. |