One of the myths in Women Who Run With the Wolves is called Manawee. It is about a man, named Manawee, who is courting twins. He has to learn their names in order to marry them. He has a dog who tries to help out by eavesdropping on the sisters to learn their names. Several times he learns their names only to forget them as a result of distractions on the path back to his masters house. When it becomes urgent, the dog is able to focus on the task and Manawee gets his wives.
This myth can be associated to Gemini, not just because twins are present in it, but also because of the dog. I think that dog symbolizes the Gemini mind so well.