The first rule of the rat club is never to talk about the rat club!
Hierarchical relationships between sexually mature males in a colony of wild gray rats are established as a result of their struggle for a dominant position, which can take the form of a fight with physical damage.
The dominant in the colony, as a rule, is the largest and physically healthy male. As for the hierarchical relationships between subordinate individuals, they are still not clear. It is known that rats with a low social status live less than rats with a higher rank. The reason is social stress.
This is a little sad thing. But we are talking about wild rats - harsh and brutal. Worldwide, the number of such attacks on a person annually reaches 3.5 million cases. Approximately 2,000 people die each year from rat-borne diseases.
And the cute decorative rodents are a little different. How? We will try to write in the near future.