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While relaxing on land, hippopotamus secrete a self-defensive
substance. If it said that this is the reason for their change
in color within some few minutes. If you approach them to
closely you might frighten them thus resulting in you not being
able to watch and observe their behavior or reaction when
eating, breeding or even sleeping! These are amazing animal
which don’t need much to live apart from a big amount of
vegetation per day. |
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