They have a trunk because it is very useful for eating and when they throw dust it can get to their backs. They also need it because it is like a thumb.
Alternate answer:
An elephant's trunk is it's nose. Elephants use their trunk to drink water as well.
Because they use their trunk as their mouth sometimes to when they want to drink.
The elephant uses his trunk to eat (the trunk grasps the food and then puts it in the elephants mouth), to shower (takes in water in his trunk and the throws it out on him) and to make noise (to trumpet).
The amount of muscles an elephant has in its trunk varies on the size of the elephant, as an elephant grows larger it will build more muscles. The average elephant has approximately 40,000 muscles in its trunk.
its trunk
bathing and eating
An elephant has just one trunk.
An Elephant Seal. It's kinda like a trunk.
the elephant's trunk has about 15000 muscles
elephant trunk is like a banana trees stem
over 4,000 muscles are in an elephant's trunk.
no there are no bones on elephant's trunk. there are only muscles and ligaments.
through its trunk 2nd answer: The elephant neither eats nor drinks through its trunk, although it does use its trunk to spray water into its mouth. The elephant grazes for its green food . . . certain grasses, certain tree leaves, and so forth. It uses its trunk to push or pull food into its mouth.