How Hippopotamus sweats red?


Hippopotamus is one of the largest living mammals in land next to Elephants and Rhinoceroses.

Unlike other animals, the Hippopotamus has very little hair and skin with 6cm thick.

These Hippopotamus weighs about 1500kg (adult Male) and 1300kg (adult Female).

They sharpen their teeth themselves as they grind together and lower incisors are enlarged and grow continuously especially in males.

These mammals does not chew cud (a portion of food returns from stomach to mouth to be chewed for second time), as they have three-chambered stomach.

Their skin secretes a natural sunscreen substance that is red-colored and the secretion is commonly called as “blood sweat”.

It is found that, the secretion turns red and red-orange when Hippos are upset sometimes.

The secretion is colorless initially and when reacts with sunlight, it turns red or red-orange and often to brown.

These two pigments are highly acidic in nature and inhibit the growth of bacteria. Also the light absorption is high in ultra-violet range, thus causing sunscreen effect.

19 thoughts on “How Hippopotamus sweats red?

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