A pair of lions encountered three rhinos near Laikipia in Kenya on April 21. However, the trio was not at all impressed by the big cats.

A recent reanalysis of a 108-million-year-old bone challenged the consensus that echidnas and platypuses descended from a single land-bound ancestor. The aquatic life was believed to have attracted a ...

A small bone found 30 years ago at Dinosaur Cove in southeastern Australia could turn what we know about the evolution of echidnas and platypuses on its head.