"A dog breed is a particular strain or dog type that was purposefully bred by humans to perform specific tasks, such as herding, hunting, and guarding. ...
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When distinguishing breed from type, the rule of thumb is that a breed always "breeds true". A dog breed will consistently produce the desireable physical traits, movement and temperament that was developed over decades of selective breeding. For each breed they recognize, kennel clubs and breed registries usually maintain and publish a breed standard which is a written description of the ideal specimen of the breed. Other uses of the term breed when referring to dogs include pure breeds, cross-breeds, mixed breeds and natural breeds." - (en.wikipedia.org 28.09.2019)