Answer:
Platypuses reproduce via sexual reproduction.
Platypuses reproduce by laying eggs, which hatch into young platypuses that initially feed off mothers' milk. The platypus is a monotreme, or egg-laying mammal, just like the echidna, and quite unique to Australia. Platypuses lay eggs in a chamber at the end of a burrow dug into a riverbank or next to a creek.
Their young, once hatched, drink milk from grooves on the mother's abdomen where it seeps from glands, rather than attaching to teats.