Order?

Why people put these twelve animals in that order, as rat the first, buffero the second, and swine at the last?

There is an interesting story in it. It is said that long time ago, the king want to choose twelve animals as the soldiers in the Palace. All animals wanted to be selected by the king and they went to sign their names. The cat had something else to do and could not go by himself. He asked the rat to sign the name for him. The rat was afraid that the cat could be selected and intentionally forgot the cat's request. Therefore, the cat could not sign his name and also could not be selected. From then on, the cat and the rat became enemies. The elephant had a good chance to be the soldier, but the rat entered the trunk and thus drive him away.

In the remaining twelve animals, they all elected the buffero as the number one. However, the rat jumped on the back of the buffero and said that he could control the buffero. Then, the rat ranked the first. The dragon and the tiger deemed it unfair. They were appointed respectively as the King of the sea and the King of the mountain, and ranked behind the rat and the buffero. The rabbit could not be convinced and it wanted to race with the dragon. The rabbit won and therefore was ranked before the dragon. The dog was angry about it and bit the rabbit, and thus was published to rank behind. Other animals also had a great competence for ranking their order. At last, it formed the order that we are all familiar with now.