Final answer:
Dogs and dolphins share a taxonomic classification system with the domestic dog considered as a subspecies of Canis lupus.
Explanation:
Dogs (genus Canis), dolphins (infraorder Cetacea), domestic dogCanis lupus familiaris (dog) belong to the same genus Canis but different species (distinct subspecies). In this taxonomic classification system, despite being subspecies, they are considered part of the same group due to their close relationship.
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