echina

Scientists in Australia have uncovered the mystery behind the bizarre four-headed echidna penis by creating an advanced 3D model of the peculiar organ. There are four species of echidnas that, along with platypuses, make up a unique group known as monotremes — the smallest of the three mammal groups — whose members lay eggs like birds and fish, but also produce milk like other mammals. Much about this group remains a mystery, the study researchers said. One of the biggest monotreme mysteries is the echidna penis, which has four separate heads, or glans, at the end of the shaft. If … Read more