A hippo must stay moist, because if its skin dries out, it will crack.
There are about 3 million first dates every day worldwide..
Johnny Depp collects Barbie dolls.
Only 351 copies of Freud's book "The Interpretation of Dreams" were sold in its first 6 years.
Alpacas can die of loneliness. When bought, they always need to be bought in pairs.
During the average meal, you eat over 90,000 miles of DNA.
A slug's anus is on its head.
A worm's mind has been mapped and replicated by scientists into a software that's now inside a Lego robot.
Eigengrau (“brain gray”) is the color your eyes see in total darkness.
The word zapomni means “to remember” in Russian and “to forget” in Polish.