In summer, people radiate heat through their skin. How does the hair on the dog's skin dissipate heat?

With the improvement of our daily life, many people like to keep some small animals to accompany themselves, especially dogs and cats, which are basically the objects of most people. In summer, we can radiate heat through the pores of the skin, and dogs are covered with hair, so they don't radiate heat through the skin like us. They have no sweat glands, so they mainly dissipate heat through the tongue and the meat pads on the four soles of their feet.

Maybe many people think that it's summer, and if the weather is too hot, they will shave the dog owner, thinking that this will cool the dog, but it won't. Dog hair itself has a certain heat insulation effect. When the hair layer is thick, the temperature of the skin surface will rise slowly, so the dog hair itself plays a protective role in regulating body temperature. If the dog's hair is shaved, the skin will be directly exposed to the sun, but the body temperature will rise faster and it will be more prone to heatstroke.

Dogs not only don't rely on hair to dissipate heat, but also need hair to block the ultraviolet rays of the sun in hot summer to prevent sunburn. In addition, the dog's hair can protect the dog's skin from injury when running or playing with companions. If you shave the dog blindly, it will make the dog depressed and even unwilling to go out. Therefore, shaving dogs in spring and summer is harmful.

Professor Wu Xuanguang from the Department of Clinical Veterinary Medicine of South China Agricultural University said: Dogs have almost no sweat glands, and only the meat pillows at the nose and sole secrete sweat, so their heat dissipation mainly depends on breathing with their mouths open, that is, "hot breathing to dissipate heat". Thick hair, even if the temperature difference between day and night is large, sleeping on the floor in the middle of the night is not so easy to catch a cold. It can also easily avoid mosquito bites and parasites because of bare skin, and can also prevent scratches to a certain extent.