I. A SURVEY OF THE FIELD

1. THE LAY OF THE LAND

2. WILD ANIMAL TEMPERAMENT & INDIVIDUALITY 

3. THE LANGUAGE OF ANIMALS

4. THE MOST INTELLIGENT ANIMALS

5. THE RIGHTS OF WILD ANIMALS

II. MENTAL TRAITS OF WILD ANIMALS

6. THE BRIGHTEST MINDS AMONG ANIMALS

7. KEEN BIRDS AND DULL MEN

8. THE MENTAL STATUS OF THE ORANG-UTAN

9. THE MAN-LIKENESS OF THE CHIMPANZEE

10. THE TRUE MENTAL STATUS OF THE GORILLA

11. THE MIND OF THE ELEPHANT

12. THE MENTAL AND MORAL TRAITS OF BEARS

13. MENTAL TRAITS OF A FEW RUMINANTS

14. MENTAL TRAITS OF A FEW RODENTS

15. THE MENTAL TRAITS OF BIRDS

16. THE WISDOM OF THE SERPENT

17. THE TRAINING OF WILD ANIMALS

III. THE HIGHER PASSIONS

18. THE MORALS OF WILD ANIMALS

19. THE LAWS OF THE FLOCKS AND HERDS

20. PLAYS AND PASTIMES OF WILD ANIMALS

21. COURAGE IN WILD ANIMALS

IV. THE BASER PASSIONS

22. FEAR AS A RULING PASSION

23. FIGHTING AMONG WILD ANIMALS

24. WILD ANIMAL CRIMINALS AND CRIME

25. FIGHTING WITH WILD ANIMALS