Hippos talk to each other by opening there mouth and like screaming out like a little voice. The males talk louder then the females because the females have soft voices.
Because they are hippos!
other hippos
Yes, if you mean the relationship between a mother and its child. Male hippos will fight over territory which can injure/kill others.
Of course, mice can talk to each other.
If you live in a fantasy world then yes.
well the male hippos enimes are humans and other hippos what he said ^
Because the people that talk about other people like them
white sided dolphines talk to each other by clicking
yes bacteria can talk to each other
yes they do, in a group of 20-30 with one male
No. Usually, hippos live in family groups, usually a single mature bull with several cows and calves. It's actually closer to hippos being polygamists, like certain sects of Mormons. If you want to draw a human parallel.
Hippos have no enemies, except maybe humans, other hippos and rarely crocodiles.