Ruppy (a portmanteau of ruby and puppy) is a beagle with genes from a sea anemone. A team of stem cell researchers in Korea cloned the cells that carry the anemone’s red fluorescent genes. The researchers created a special glowing dog stem cell nucleus, and used it to replace the nucleus of a mother dog’s egg cell. They created over 300 embryos like this, implanted them in 20 different dogs, and though the cloning process has a high failure rate, they were able to produce 5 glowing puppies, including Ruppy. These dogs should be able to grow up and naturally give birth to new glowing puppies.
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