What is the shared species designation for the Yorkie Bichon and Golden Retriever?
Answer
*Canis lupus familiaris*
All recognized dog breeds, including the designer Yorkie Bichon and established breeds like the Golden Retriever, share the fundamental scientific species designation of *Canis lupus familiaris*. This classification signifies that they belong to the same domestic canine lineage. The term 'designer' or 'hybrid' breed refers to a mixing of two pure lines within this single species, but it does not grant them a separate, unique scientific classification above the species level. The domestication process has solidified this subspecies designation, recognizing all modern dogs as belonging to this specific grouping under the broader *Canis lupus* species.

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