BREED

n. a sub-group within a species sharing similar characteristics that are distinct from other members of the same species. Breeds are common is domesticated animals such as dogs, cats, and horses. In the Hound Group of dogs, for instance, the American Foxhound is distinct from the Bloodhound.

BREED: “To produce a strong breed of race horses, not just any combination will do because there is such a thing as selective breeding.”
 

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