a cow from a third world country produces, on average, more methane than a cow from a European country?

Dueling is legal in Paraguay as long as both parties are registered blood donors.

Only sharks that have more than 6 gills are considered pre-historic species.. there are still many around today.

of all the words in the english language, the word "set" has the most definitions!

http://www.google.co.uk/search?hl=en&pwst=1&defl=en&q=define:set&sa=X&oi=glossary_definition&ct=title

Hippopotomonstrosesquippedaliophobia
is the fear of long words.

Taken from http://www.comedy-zone.net/triviazone/humans/page2.htm

Averages:

Every square inch of the human body has an average of 32 million bacteria on it. (Yikes!)

http://www.corsinet.com/trivia/average.html

The words "assassination"and "bump" were invented by Shakespeare. If you say "laugh it off" you are also quoting shakespeare. Other inventions included ´puke´ and ´bedroom´.

Only dolphins and humans are the only mammals that have sex for pleasure. 

Ever wonder why a groom carries a bride over the threshold on their wedding night?  It was considered a very bad omen if the bride tripped or fell into her home on her wedding night.  So the groom would carry her over the threshold to ensure that she safely entered the home.

Staring at a blue surface during sex greatly increases the intensity of orgasms. (Due to the angle at which the optic nerve enters the brain apperantly!)