As the name implies, "snail" is a "cow" with a volute on its back. In fact, although it is small, it has "horns", great strength and delicious meat. It really looks like an ox. France is the earliest place to raise and eat snails in the world, and its recorded history can be traced back to ancient Rome. Nowadays, snails are eaten all over the world, especially in western Europe and North America. There are more than 40,000 kinds of snails, and individuals are large and small. The largest is the African snail, which can reach18× 7cm and weighs 500g.
Snails have a strong vitality. On March 25th, 1846, an Englishman brought back two snails from Egypt, stuck them on a fixed plate and put them in the herbarium for collection. 1850 On March 5th, it was found that there was a newly formed mucosa in one of the shells. The researcher was so surprised that he took it off the board and put it in a warm water basin. In a short time, its body emerged from its shell, and began to eat vegetable leaves the next day, and fully recovered after one month. This snail has survived for four years without food and drinking water, which shows its strong vitality.
When the environment around the snail is extremely bad, it can secrete a layer of liquid at the mouth of its shell, which will gradually form a film to seal its mouth. As soon as it is turned on, it is equivalent to entering a dormant state. In addition, the snail itself is rich in nutrition and can not eat or drink for a long time.