Many male hoverflies have bigger eyes than females, giving them the advantage of better optics and faster photoreceptors in ...

Ultrasonic tracking in Hiroshima Bay shows that male and female black sea bream move differently during the spawning season, ...

For nearly a decade, Vincent Bombail has been tickling rats. It’s been a standard technique used in the study of animal ...

Male primates may be larger than females partly because of pressure from rival groups, not just competition with males inside ...

A survey of more than 300 mouse strains has found widespread discrepancies between how mutant mice are reported and their ...