中文摘要：《野性的呼唤》是美国现实主义作家杰克·伦敦的一部作品。这部小说通过描述巴克这一形象的经历，揭示出了自然界中的残酷斗争和生存法则，写的是狗，却也反映了人的世界。这篇论文将结合“适者生存”理论，对小说中巴克这一复杂形象进行解析，探讨其角色在小说前后的转变，从而得出作者想表达的适者生存内涵。

关键词：巴克，适者生存，转变

CONTENTS

中文摘要

Abstract

1 Introduction-1

1.1 Introduction of Jack London-1

1.2 Introduction of The Call of the Wild-2

2 The Call of the Wild and “Survival of the Fittest” Theory-2

2.1 Survival of the Fittest-2

2.2 The Law of Club and Fang-4

2.3 Transitions of Buck-5

2.3.1 Becoming a Sled Dog-5

2.3.2 Becoming a King of the Harsh North-6

2.3.3 Returning to Barbarism-7

3 Character of Buck-8

3.1 Searching for Freedom-8

3.2 Searching for Harmony-9

3.3 Searching for Love-9

4 Conclusion-10

References-12