copulation

Play has been reported in reptiles, fish, and even spiders, where sexually immature animals use it to practice copulation.

In duck ponds, Prum said, a lot of forced copulation occurs.

"The females are enormously, amazingly successful at preventing fertilization by forced copulation," he said.

This posture, to which they are easily accustomed, becomes natural to them, since they assume it at the time of their copulation.

It has been asserted, that another kind of mule is produced from the copulation of the bull with the mare.

The architecture of their bodies would make face to face copulation very difficult.

Il y aurait peut-tre une certain correlation entre la copulation complte et profonde et le dveloppement crbral.

And as the glans of man are the seat of the greatest pleasure in copulation, so is this in the woman.