Animals have personalities too—and some animal couples raise their young better based on how well their personalities match. Greylag geese, which mate in long-term monogamous relationships, have ...

Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new study has found. Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new ...

A study of more than 100 greylag geese found individuals were consistently different in personality traits, ranging from boldness, aggressiveness, sociability to other behavioural traits. Birds of a ...

Researchers uncover how specific genetic and cardiovascular traits give Tibetan women an edge in surviving and thriving at high altitudes, linking better oxygen delivery to more successful pregnancies ...

Male bonobos have an impressive ability to detect when females are most fertile, even though the usual visual cues are unreliable. Researchers tracking wild bonobos in the Congo discovered that males ...

A longstanding question in evolutionary biology is how sexual selection influences how entire genomes develop. Sexual selection is where individuals with certain traits have higher reproductive ...