How many nipples do hippos have?

Question

I mean seriously, does anybody know?

Answer 1

Hippos have twenty-four nipples, twelve on each side.  

However, none of them give milk.  Hippos are vegan, so they don't drink milk, eat eggs, or consume meat of any kind.  Their nipples are only used for mating and ringing doorbells when their hands are full.

Answer 2

This site says two nipples.

http://books.google.com.au/books?id=tRp8...