Human: What are the most important differences between the hippopotamus and the elephant? Assistant: 

1.  The hippopotamus is much smaller than the elephant, with an adult male typically measuring around 6 to 8 feet long and weighing up to 2,000 pounds.
2.  Hippos have a longer snout and more pointed ears than elephants.
3.  Hippos have a distinctive hump on their back that is used for balance while swimming.
4.  Hippos have a unique vocalization called a grunt that can be heard from several hundred yards away.