Hippos secrete a substance often referred to as "blood sweat," but it's not actually blood. it's called hipposudoric acid. It's a thick, oily, red substance that acts as a sunscreen, protecting their skin from the sun's electromagnetic radiation. This secretion also has antibiotic properties, helping to prevent infections. It's produced by specialized glands in their skin and is often visible as a reddish tint. | vt.physics

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