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From Today's New York Times

Animal Ethics

” (news article, Dec. An Oxford University study published in the journal Nature found that wide-ranging carnivores like tigers and other big cats “show the most evidence of stress and/or psychological dysfunction in captivity.” Tigers are designed by nature to roam far and wide, hunt, claim territory and seek out mates.

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Moral Vegetarianism, Part 11 of 13

Animal Ethics

Or the same number of meat-producing animals could be produced and fed the same amount of grain, but new markets could be found for meat and new needs created. Or new markets could be found among the countries of the world where meat consumption is slight; more need for meat could be produced among nonvegetarians and dogs and cats.