28 March 2023
Some male cockroaches have adapted their mating strategy to succeed with females that have developed a distaste for the sugar used in both poisonous baits and gifts from males
10 March 2023
When macaques use stones to crack nuts, they accidentally create flakes that look like early human artefacts, raising questions about whether such objects were made deliberately
8 March 2023
The Cambrian fossil Protomelission was identified in 2021 as a type of coral-like animal called a bryozoan, but new specimens make it look more like a kind of green algae
12 December 2022
Bush crickets from the Triassic era onwards evolved high-frequency songs to avoid being heard by predators
20 July 2022
Analysis of inner ear canals from hundreds of modern and fossil animals shows that warm-bloodedness appeared abruptly in the late Triassic
20 July 2022
A fossil from 385 million years ago named Qikiqtania wakei shows that a descendant of early land animals lost its adaptations for land and became a more efficient swimmer
26 January 2022
About one-fifth of all Melipona beecheii stingless bee larvae develop as queens, but the colony accepts only one – the rest are executed by worker guards
8 November 2021
More than half a billion years ago, tiny penis worms had learned to protect themselves by grabbing and living inside snail-like shells, like hermit crabs do today
30 March 2021
Vampire bat taste receptors react to "bitter salts" like magnesium sulphate – perhaps because drinking water containing the salts might react badly with the blood the bats eat
11 November 2020
The snake-like lizards of the Brachymeles genus began with four legs, lost them about 62 million years ago, and then 20 million years later regained them to deal with a wetter climate
