What do you call an unknown mammal wallowing in an African river?... Nature animal reading supernatural_creature water Please Rate Vote 1 Vote 2 Vote 3 Vote 4 Vote 5 Today's featured daily humor:What do you call an unknown mammal wallowing in an African river? a hippononymousClick for another laugh! Previous article: I saw some guy dip his testicles in...... Prev Next article: So these 3 guys go hunting together.... Next