What are the benefits of pigs?

Pigs can not only be eaten by people, but also provide raw materials for tanning and pharmacy. Even manure is an excellent agricultural fertilizer, which is really "full of treasures".

The pig looks stupid and dirty. In fact, it has some intelligence that even dogs can't match! Scientists have conducted a series of tests on pigs, such as dancing, diving, pulling carts, opening doors and other "talents". Pigs can learn by watching people's demonstration movements once, while dogs have to repeat them nearly ten times. Now, the pig is on the circus stage and performs better than the dog.

Scientists also found that pigs are not born dirty. There are not many sweat glands on its skin, so it likes to soak in water in order to dissipate heat on a hot day. Just because it can't find clean water, it has to soak in the mud. Pigs also know hygiene. It is always as far away from where it eats and sleeps as possible, but people can't get it dirty in the pigsty.

Pigs have poor eyesight and hearing, but their noses are brighter than lions. So some people train pigs to hunt. They can smell prey 20 meters away. After training, pigs can also help find buried mines.

Pigs are very selective about eating and will never eat anything they don't like. They also know how to eat less and eat more, and chew slowly. Pigs can also eat snakes and have strong resistance to snake venom. So Americans put pigs in farmland, and the number of poisonous snakes in the field decreased obviously.