Seoul, South Korea, July 1, 2008—Who's the cutest? Four puppies cloned from a Labrador retriever pose with researchers at Seoul National University's College of Veterinary Medicine.

Two South Korean labs are offering cloning services to pet owners at prices ranging between U.S. $50,000 and $100,000.

Owners of working dogs have been the best customers to date, however. To South Korea's customs service, for example, cloning champion sniffers is a more efficient option than breeding the dogs the old-fashioned way.

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