If a book of average size would contain all of the insect’s names, it would have about 6.000 pages, as our planet has more than 900.000 known species.
Just like people prefer to use their right or the left hand, octopuses also preferred one of their tentacles, and use it more frequently.
Electric eels can regenerate their muscles and fins.
Matt Groening, the author of all time favorite cartoon "The Simpsons," has put his initials in the drawing of Homer Simpson the “M” is located in his hair, and the “G” in his ears.
It is impossible to sneeze with your eyes open.
The first city in the World that has reached one million inhabitants was Rome, around 133 BC. London got its one million inhabitants in 1810, and New York in 1875. Today, there are over 300 cities with more than a million inhabitants.