The Declaration of Independence was written on hemp paper. The dot over the letter 'i' is called a tittle. A female ferret will die if it goes into heat and cannot find a mate. A duck's quack doesn't echo. No one knows why.
Every person has a unique tongue print.
The 'spot' on 7UP comes from its inventor who had red eyes. He was albino. 315 entries in Webster's 1996 Dictionary were misspelled. During the chariot scene in 'Ben Hur' a small red car can be seen in the distance. John Wilkes Booth's brother once saved the life of Abraham Lincoln's son.