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Hippopotamus
The hippopotamus is a very large mammal that comes from Saharan, Africa. The hippopotamus has a secret skin to secrete oil to minimize the growth of bacteria.
a hippopotamus has red sweat-like liquid it secretes to act like sunblock
sweat
The mud
sebum sebacious oil.
skin
Apocrine glandsebaceous
An endocrine gland secretes hormones into the bloodstream as oppose to an exocrine gland which secretes substances into the body cavities or skin.
None. They have skin covering them, not hair.
The hippopotamus, the second largest land animal after the elephant, spends most of its time partly submerged in a river. When the hippo does climb out of the water, its skin often secretes drops of a bright red liquid that looks just like blood. Some circuses used to claim that they had "blood-sweating hippos" on display, but this red liquid is not blood - it's sweat. The hippo secretes a red oil that mixes with its sweat to keep the hippo's hide moist and soft, thus preventing it from drying out in the hot sun.