20 February 2025
In new video footage, cuttlefish show off their dazzling camouflage techniques, such as creating stripes that move over their bodies or mimicking non-threatening objects
13 February 2024
Male Brachycephalus pulex frogs are so small that two of them can sit side by side on a pinky nail
21 July 2023
Over 99 per cent of green turtles born on beaches in the northern Great Barrier Reef are now female due to nest overheating, but cooling their nests with seawater may help to rebalance the sex ratio
20 July 2023
Male orcas with a surviving postmenopausal mother have fewer signs of injury than those whose mothers are dead or still reproducing
20 July 2023
The ability to warm up parts of their body may help basking sharks migrate long distances and overcome drag when they are feeding
18 July 2023
A small mammal from the Cretaceous Period appears to have been preserved by volcanic debris while attacking a dinosaur three times its size
14 July 2023
Found in a Brazilian cave, the remarkable specimen of a ground sloth fetus inside its mother offers a rare insight into the developmental biology of the extinct mammal
14 July 2023
An experiment in which pigs showed an inclination to help other group members suggests they have an altruistic streak – but selfish motivations can’t be ruled out
14 July 2023
Large numbers of dead fish have been seen in many UK rivers in recent weeks, and researchers warn that climate change will lead to more such events
12 July 2023
An analysis of bones from the La Brea tar pits in California reveals that sabre-toothed tigers and dire wolves had very high rates of osteochondrosis, which may stem from a dwindling gene pool as they neared extinction
