From Today's New York Times
Animal Ethics
JANUARY 7, 2015
Mentally, they go insane from boredom and stress, just as our dogs or cats would if they were kept in tiny crates or carriers for their entire lives. There is no difference between cruelty to a pig or a dog or a hen or a cat, and so the sooner we relegate these awful devices to the dustbin of history, the better.
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