Human: What are some interesting facts about the hippopotamus? Assistant: 

1. The hippopotamus is the largest living member of the family Hippopotamidae, with adults typically reaching a length of 6 to 8 feet and weighing up to 3,500 pounds.
2. Hippos have been known to live in groups called “hordes” that can number over 100 individuals.
3. Female hippos give birth to one baby at a time, which they carry around for up to two years before weaning it off milk and onto solid food.
4. Hippos have a complex social structure, with males forming alliances to compete for females.
5. Hippos communicate through grunts, snorts, and roars, as well as by touching noses.
6. Hippos are excellent swimmers, but they cannot walk on land.