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1. What is a "message" in the context of animal communication?

2. What does "posture" mean in the text?

3. What do animals use to scare both enemies and prey?

4. What does the term "infinite" mean as used in the text?

5. What kind of messages do animals send when they are afraid?

6. How do animals use smell to avoid danger?

7. What is the meaning of "express" in the text?

8. What does the word "communicate" mean?

9. Why do animals bare their teeth?

10. What does "warning" mean in the chapter?

11. What is one limitation of animal communication compared to human language?

12. What does the term "bare" mean in the text?

13. What is NOT a characteristic of human language mentioned in the text?

14. How do animals indicate fear or anger without making sounds?

15. What is one common similarity between humans and animals in communication?