Researchers at Seoul National University have announced the creation of a genetically modified, glow-in-the-dark dog. The female beagle, named Tegon, glows fluorescent under ultraviolet light. What is particularly interesting about Tegon is that the glowing ability is capable of being turned on and off. The drug doxycycline can activate or deactivate the ability to glow. Led by Lee Byeong-chun, the researchers used the same somatic cell nuclear transfer technique to make Tegon glow that was used in 2005 to make the world’s first cloned dog, Snuppy.