University of California, Berkeley, herpetologist Jim McGuire was slogging through the rain forests of Indonesia's Sulawesi Island one night this past summer when he grabbed what he thought was a male ...

For many fish species today, copulation is a hands-off affair. Females release a torrent of eggs into the water, and males douse the eggs in a cloud of sperm. This seems like a pretty basic way of ...

The history of sex may have to be rewritten thanks to a group of unsightly, long-extinct fish called placoderms. A careful study of fossils of these armour-plated creatures, which gave rise to all ...

L. larvaepartus (male, left, and female) from Indonesia is the only frog ever discovered to birth live tadpoles. Photo: Jim McGuire Here's how frogs usually grow: Gooey clutches of frog eggs (a ...

Evidence of bony organs in ancient, armour-plated fish suggests that they copulated even though many of their descendants stopped doing so. The history of sex may have to be rewritten thanks to a ...