Recently, in a Tibetan pig breeding base in Anhua, whenever "Nanniwan" rings, thousands of pigs will flock to the farm from the mountains. The owner of the farm said that he trained pigs with conditioned reflex, and whenever he fed them, Nanniwan would be played. Over time, these pigs will have a conditioned reflex to the broadcast, so there will be a spectacular scene in which thousands of pigs come from all directions when the music in Nanniwan rings.

In fact, we have always had a deep misunderstanding about pigs. Pigs are actually the third cleverest animals in the world, after chimpanzees and bottlenose dolphins.

Since the 1990s, scientists have conducted an experiment. In this experiment, trained pigs can move the pointer on the screen with their mouths and use the pointer to find the graffiti they first saw. The experimental results show that the pig successfully completed the task in about the same time as the chimpanzee.

In the journal Animal Behavior, some researchers also provided favorable evidence that pigs can quickly understand the working principle of mirrors, and they can use the reflection function of mirrors to observe the surrounding environment and even look for food. ? Pigs can use mirrors? This discovery is just one of a series of findings in the preliminary study of pig cognition. Other researchers have also confirmed that pigs are also excellent at remembering food storage and the connections between each food storage point.

In many ways, even a dog with a strong understanding can't compare with a pig. After professional training, pigs can not only master various movements like dogs, but also have shorter training time than dogs. Some specially trained pigs can dance, drum and swim, and some pigs can shoot accurately. 7% of pig brain is used to deal with odor, 700 times more than human brain. Therefore, pigs have a very sensitive sense of smell, and humans also use this to find precious foods such as truffles.