![Hippo Potamus Head Lie Down In River Open Eye A Bit With Sunlight And Shade Stock Photo - Download Image Now - iStock Hippo Potamus Head Lie Down In River Open Eye A Bit With Sunlight And Shade Stock Photo - Download Image Now - iStock](https://media.istockphoto.com/id/926944248/photo/hippo-potamus-head-lie-down-in-river-open-eye-a-bit-with-sunlight-and-shade.jpg?s=612x612&w=0&k=20&c=Tj7VNhO-km5AoY6qkjOqp7kHE9N6Yl9BwVtTeL3d7PM=)
Hippo Potamus Head Lie Down In River Open Eye A Bit With Sunlight And Shade Stock Photo - Download Image Now - iStock
![CSIROさんはTwitterを使っています: 「#4oclockfact Hippos secrete an oily substance from their mucus glands that's red in colour. It keeps their skin moist, acts as a sunscreen, and it's why hippos may look pink when CSIROさんはTwitterを使っています: 「#4oclockfact Hippos secrete an oily substance from their mucus glands that's red in colour. It keeps their skin moist, acts as a sunscreen, and it's why hippos may look pink when](https://pbs.twimg.com/media/D5S4P9AUEAARKHi.jpg:large)
CSIROさんはTwitterを使っています: 「#4oclockfact Hippos secrete an oily substance from their mucus glands that's red in colour. It keeps their skin moist, acts as a sunscreen, and it's why hippos may look pink when
![Hippos have colourful sweat. Within minutes, the colourless sweat of the hippopotamus gradually turns red, and then brown. The unstable red and orange pigments turn out to be non-benzenoid aromatic compounds that Hippos have colourful sweat. Within minutes, the colourless sweat of the hippopotamus gradually turns red, and then brown. The unstable red and orange pigments turn out to be non-benzenoid aromatic compounds that](https://i.redd.it/83m81yx03ss31.jpg)
Hippos have colourful sweat. Within minutes, the colourless sweat of the hippopotamus gradually turns red, and then brown. The unstable red and orange pigments turn out to be non-benzenoid aromatic compounds that
![Hippopotamus Showing Secretion Of Sun Screen Liquid From Sweat Glands Stock Photo - Download Image Now - iStock Hippopotamus Showing Secretion Of Sun Screen Liquid From Sweat Glands Stock Photo - Download Image Now - iStock](https://media.istockphoto.com/id/926039658/photo/hippopotamus-showing-secretion-of-sun-screen-liquid-from-sweat-glands.jpg?s=612x612&w=0&k=20&c=hTDbzBi5XA5KBhTc2F2vnOaSrsGqBshkiMujF1mEanU=)
Hippopotamus Showing Secretion Of Sun Screen Liquid From Sweat Glands Stock Photo - Download Image Now - iStock
![Hippos have a very sensitive skin and have no sweat glands but have glands that produce a secretion known as Pink Sweat to protect their skin Stock Photo - Alamy Hippos have a very sensitive skin and have no sweat glands but have glands that produce a secretion known as Pink Sweat to protect their skin Stock Photo - Alamy](https://c8.alamy.com/comp/PYPF0E/hippos-have-a-very-sensitive-skin-and-have-no-sweat-glands-but-have-glands-that-produce-a-secretion-known-as-pink-sweat-to-protect-their-skin-PYPF0E.jpg)