Discover more about the egg-laying monotremes of Oceania and the ancient traits they still carry.

Monotremes are unique mammals that lay eggs, but their limited geographic ranges make them vulnerable. We explain why.

Wondering about the weirdest animals in the world? We've listed the Top 31 here — including the axolotl, aye-aye, blobfish, ...

Does a cuckoo know it's a cuckoo? The answer is more difficult than you might think, explains Richard Pallardy ...