The hippopotamus (Hippopotamus amphibius) cannot wear a white shirt. No, not because they don’t have shirts to match (even!) but because their sweat would ruin any piece of clothing of that color. The reason is simple: The liquid he secretes from the skin is red like bloodBut it does not result from any injury.
These creatures spend most of their time in the water, eating grass and aquatic plants. Their skin is 5 cm thick and often hairlessAs well as being highly sensitive to both dryness and sunburn. Since they live in sub-Saharan Africa, avoiding the sun is definitely very difficult.
Obviously, the red stuff is neither blood nor sweat (technically) since it’s released from the subcutaneous glands, but it can be seen as such since Helps control the pet’s body temperature. When secreted the liquid is initially colourless, then changes to red within minutes and eventually turns brown as the pigment polymerizes.
This substance also sticks to the skin due to the high concentration of mucus (difficult to form in the laboratory). In 2004, curious and brave researchers collected the material and studied it to understand what it is. Two pigments were found responsible for the color reaction: one red and the other orange. They both absorb UV rays, and act as sunscreenwhile red also acts as an antibiotic by inhibiting the growth of disease-causing bacteria.
By the way, did you know that when a hippopotamus sees one of its kind, it sprays excrement on it?