Human birth control pills work on gorillas.
The eagle has sex while going up to 60 mph. in flight, and it is common for both eagles to hit the ground before they finish.
A man’s beard grows fastest when he anticipates sex.
The only animals who have sex for pleasure are humans and dolphins.
A female orgasm is a powerful painkiller (because of the release of endorphins), so headaches are in fact a bad excuse not to have sex.