What animal is the analogy between a dog's tail and a mink?

A dog's tail and a mink are attached to another thing, which looks like a dragon at first. In ancient times (probably during the period of Yao Shunyu), each tribe had its own totem, just like the national flag of every country now. When a tribe defeats another tribe, he will draw the part of the totem of the other tribe that he thinks is more powerful on his own totem, and over time it will form the appearance of a dragon.