While both male and female platypuses are born with ankle spurs, only the male has spurs which produce a cocktail of venom composed largely of defensin-like protiens (DLPs), three of which are unique to the platypus.
The female platypus has a pair of ovaries, but only the left one is functional. The platypus lacks teats. Instead, milk is released through pores in the skin. There are grooves on her abdomen in which the milk pools, allowing the young to lap it up. A platypus is born with teeth, but these drop out at a very early age, leaving the horny plates with which it grinds its food
tagged as: Platypus. australian wildlife. monotremes. egg laying mammals.