Fact 1: Playing is just one of many ways that mammals and other animals learn how to behave.

Fact 2: Pugs are mammals and mammals shed.

Given the two facts above, answer the question "What is just one of many ways that pugs learn how to behave." with the following options: 
- humans
 - playing
 - sleeping
 - growing
 - Movement
 - sound
 - genetics
 - exercise


 

  playing       