Ask for a science fiction novel. The alien mind exists in the wolf's brain.

Recommend a science fiction novel "The Host".

The background of this novel is the battle between human beings and an alien race "soul". Soul is a parasitic existence, which lives in human body and controls human behavior. The soul thinks that it is helping mankind and providing peace and stability, but the freedom and independence of mankind have also been destroyed. The hero of the story is a girl named Melanie. Her body is parasitized by a soul named Winchener, but her mind is still thinking freely.

During a hard journey, she had a strange relationship with the soul parasitic on her, and gradually intertwined. When they came to a group of rebellious human settlements, the conflict of stories reached its climax. There, Melanie learned how to cooperate with dangerous human companions and protect outsiders.

Generally speaking, The Outsider vividly describes the contradiction and opposition between human beings and alien races, and also discusses the relationship between free will and parasites, which is very exciting to read.