Platypuses do not have nipples, so they sweat milk out of specialized mammary gland ducts on their abdomen to feed their young.

A closer look

Platypuses do not have nipples, so they sweat milk out of specialized mammary gland ducts on their abdomen to feed their young. Baby platypuses simply lick the milk directly off their mother's fur like they are cleaning up a dairy spill. The platypus is biological proof that evolution was just throwing random leftover parts at the wall to see what stuck. It has a duck bill, beaver tail, venomous ankle spurs, lays eggs, and secretes nutrition through its pores. The entire existence of this creature feels like an elaborate prank played on nineteenth-century zoologists who literally thought the first specimen they received was just various animal parts stitched together by a bored taxidermist. Mother nature really outdid herself with this weird little aquatic frankenstein