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Breeding in is breeding with someone who is related to you. And breeding out is when someone is not related to you. For example lets say a girl dog and a boy dog breed they produce a girl dog. The girl Dog Breeds with her father and its considered breeding in. And the off spring turns out deformed and sick. Out breeding is like when a girl dog breeds with another dog that is not closely related so it is considered out breeding. Hope this solves your answer.

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17y ago

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