Practical Ethics

by Peter Singer

Published date: 1979

Category: Philosophy



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Index Topics & Notes

Insight: Jane Goodall discovered that chimpanzees chewed up leaves and trimmed the branches of trees to make tools for catching insects. It was previously believed that only humans made tools.

Insight: Jane Goodall observed that if lower ranked animals in a group spot food, they will not approach if the higher ranked individuals can see, and will wait until they are alone.