She has jokingly been called a "perve in the bush" but it is thanks to the 35 years that Peggy Rismiller has spent watching the sex life of echidnas that we know as much as we do about the ...

What is the echidna? Echidnas are part of a group of animals called monotremes, which is the only group of mammals that lay eggs instead of giving birth to live young. Echidnas are one of only ...