Add Yahoo as a preferred source to see more of our stories on Google. FILE PHOTO: An Asian elephant dries off with some sand in his enclosure at the zoo in Karlsruhe July 7, 2011. REUTERS/Alex ...

Feb 13 (Reuters) - An elephant's trunk is essential for most aspects of the animal's life, from interacting with its environment and with other elephants to eating and drinking. And the roughly 1,000 ...