Boneless

An elephant’s trunk is not controlled by any bones, but by 40,000 muscles.

Here are the sources for my fact:

http://www.randomfacts.com.au/rf/random_facts/random_animal_facts.html

and

http://en.wikipedia.org/wiki/Elephant#Trunk

Here is a video of an elephant dragging a log with its trunk:

http://www.youtube.com/watch?v=VVABxJDLw0w