Monogamy or death: these parasitic flatworms take true love to new extremes.
One of the longest-living animals, which is also the world’s biggest clam, could have important stories to tell about Earth’s climate history.
The mystery of the Madagascar dwarf lemur’s winter disappearance has been revealed: it burrows deep into the soil, curled up for a months-long sleep, scientists were astonished to find.
A spineless porcupine, discovered at a food market in Laos.
Mudskippers are fish out of water.
Male manakins are among nature’s greatest show-offs.
The caves of Slovenia are home to a tiny, blind salamander known as the olm.
A weird marine creature that lived 500 million years ago at a time of explosive growth in Earth’s biodiversity could be a forerunner of worms and molluscs, a study says.
A 16-million-year-old fossil has cast doubt on claims from the 1980s of an extinct ‘killer walrus’ species adapted to feed on ‘large, struggling prey’.
A new lizard species has been discovered in Madagascar and named “Moby Dick” mermaid skink – after the albino sperm whale imagined by Herman Melville – for its flipper-like forelimbs and unpigmented skin.