some things :
Eight is considered a lucky number in Chinese culture because it sounds like the word "prosper" or "wealth" .
As of 2006, in our solar system, eight of the bodies orbiting the Sun are considered to be planets.
All spiders, and more generally all arachnids, have eight legs. An octopus has eight tentacles.
In the human adult dentition there are 8 teeth in each quadrant. The 8th tooth is the so called the wisdom tooth.
Members of The Church of Jesus Christ of Latter-day Saints believe that humans are responsible for their actions by the age of 8. Before that age, children lack sufficient knowledge to commit sin and are therefore exempt from judgment for their actions.
It is the retired jersey number of Baseball Hall of Fame players Cal Ripken, Jr., Joe Morgan, Willie Stargell, Carl Yastrzemski, and Yogi Berra.
In liquid measurement (US customary units), there are 8 fluid ounces in a cup, 8 pints in a gallon, and 8 tablespoons in a gill
"Section 8" is common U.S. slang for "crazy", based on the U.S. military's Section 8 discharge for mentally unfit personnel
Eight is symbolic for lesbian sexual relations.
