What do you know about pigs?

What is the cold knowledge about pigs?

1 pigs can also be detectives.

In the past, when looking for truffles, pigs were the masters of human beings. Truffle is a mycorrhizal fungus, which mostly grows in the roots of broad-leaved trees. Without digging up the soil, people simply can't see which tree grows this precious food. However, sows can easily find them-because the smell of truffles is very similar to that of boars' sex pheromones.

Pigs hardly sweat.

Although there are structures similar to sweat glands, pigs hardly sweat. In order to cope with high temperature, pigs have two ways:

Heat dissipation through respiratory tract: It is found that when the skin temperature is higher than 35℃, the breathing frequency of pigs will be obviously accelerated, which is helpful for heat dissipation;

Adjust body temperature through behavior: for example, hiding in the shade, or rolling in the mud.

3 pigs don't like cleanliness?

People usually think that pigs don't like cleanliness-perhaps they have noticed that pigs use mud baths to cool down-which may be a misunderstanding. A study published in the journal Animal Cognition provides evidence for "pigs care about hygiene". The wild boar population observed by researchers can tell whether the food is clean or not. Even if they are hungry, they will deliberately take the apples stained with sand to the stream and wash them before eating.

Pigs don't look up at the sky.

Physiologically, pigs don't look up at the sky because they can't! The pig's forehead (also called head meat) is particularly thick, blocking the line of sight of the eyes. Moreover, the pig's cervical spine is relatively straight, and its back is relatively fat. It can only be barely raised by 15 degrees, and it will not work if it is higher.

5 pigs are stupid?

Pigs are not stupid at all! Their IQ is high enough to play video games.