Please add your Echidna image to this page and Share. Echidnas, sometimes known as spiny anteaters, are monotremes which are egg-laying mammals. Together with the platypus, they are the only surviving members of the order Monotremata and are the only living mammals that lay eggs. For more Australian wildlife and adventures check out findmyaustralia.com "for use of this video in commercial player or media please contact findmyaustralia.com" | Find My Australia