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Australia is home to a rich variety of rare and unique animals, with nearly 80% of its plants and animals found nowhere else ...

Birds are also warm-blooded but lay eggs, and reptiles are cold-blooded egg-layers that rely on the Sun or another heat source to warm them up. The platypus was initially a challenge to classify due ...

Platypuses may have some duck-like characteristics, but they are a rare type of mammal called a monotreme. Monotremes differ from other mammals because they lay eggs instead of giving birth.

Renowned for its bill, webbed feet and venomous spurs, the platypus is one of only two egg-laying mammals in the world.