We have our fourth round of weekly additions—Duck-billed Platypus. The Platypus is an extremelly interesting creature to scientists: it has numerous mammalian characters such as mammary glands and fur, yet it lays eggs, like birds and reptiles. The Platypus and all of the Echidna species make up a group called Monotremata which is the sister group to all other mammals (including marsupials). The Platypus can be found up and down the eastern coast of Australia