Here, then, we see that the propensities that are the most marked, and the most constant in every breed of domestic dogs, are not to be found in animals of the same species in their natural state, or even in their young, although subjected to the same treatment from the moment of their birth. Notwithstanding the above-mentioned fact, we may, I think, consider the domestic dog as an animal per se, that is, that it neither owes its origin to the fox nor wolf, but is sprung from the wild dog.

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