2013 will no doubt be remembered as the year that we discovered a magnificent, fascinating truth about the animal kingdom:
All mammals pee for 20 seconds.
Give or take. What David Hu -- a mechanical engineering professor at Georgia Institute of Technology -- actually found was that mammals that weigh more than 2.2 pounds (or 1 kilogram) all pee for roughly the same duration.
Why, you might ask, wouldn't an elephant take more time than a dog? It has to do with the flow rate and even the size of the urethra [source: Arnold]. And there's A LOT of pee coming from an elephant, several bathtubs' worth, according to Hu [source: Arnold].
All kidding aside, this research can help contribute to research about prostate problems or help veterinarians troubleshoot issues with an animal's urinary tract.