The platypus is one of the most unusual animals in the world ... nature makes it one of the most mysterious creatures in the monotreme family. Monotremes are a fascinating and rare group of ...

Clockwise from lower left: Opalios splendens, a newly described species dubbed an ‘echidnapus’; Stirtodon elizabethae, the largest monotreme of the time; Kollikodon ritchiei, with hot-cross ...

What a beautiful birthday girl—and what a stunning birthday cake! Of course, Adelaide's human pals probably declined taking a ...