Chapter 20: Mammals and Animal Behavior


You might think that these young tigers are fighting, but they’re really playing. Like most other young mammals, tigers like to play. Why do mammals play? Is playing just for fun, or does it serve some other purpose as well?

Playing is actually an important way of learning. By playing, these tigers are learning moves that will help them become successful predators as adults. Playing is just one of many ways that mammals and other animals learn how to behave. In this chapter, you will learn more about mammals such as tigers. You will also learn more about animal behavior and other ways that animals learn.

Chapter Outline

20.1 Mammalian Traits

20.2 Reproduction in Mammals

20.3 Classification of Mammals

20.4 Overview of Animal Behavior


Opening image copyright hxdbzxy, 2010. Used under license from

For first table in chapter 20, from top to bottom,

For second table in chapter 20, from top to bottom,

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