Introduction: the limits of fossil evidence 1. Taxonomy and the reconstruction of evolution 2. What is intelligence and what is it for? 3. How animals learn 4. Why animals learn better in social groups 5. Imitative behaviour in animals 6. Understanding how things work 7. Understanding minds: doing and seeing, knowing and thinking 8. What use is a theory of mind? 9. Planning and thinking ahead 10. Apes and language 11. Food for thought 12. Machiavellian intelligence 13. Testing the theories 14. Taking stock
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