Originally Posted by
flatlander
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Chickens are indeed highly omnivorous, they will even kill mice and other vermin if they can get hold of them and then eat them, let alone small insects. This appears to horrify some amateur chicken-keepers, especially when a cat flushes mice and the chickens go for the mice. Chickens are about as harmless and docile as, well, a cat.
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The dinosaur ancestry perhaps?