| Age | Attributes |
|---|---|
| 0 days | After a gestation period of about 21 days a female platypus lays one to three eggs |
| 10 days | After being incubated the eggs hatch |
| 3-4 months | The young platypus will stop drinking its mothers milk and leave the burrow |
| 12-18 months | The platypus reaches physical maturity |
| About 20 years | Platypuses typically live anywhere from 7 to 14 years in the wild but can live up to 21 years in captivity |