The new trend: glowing animals

A glowing trend: glow-in-the-dark animals

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A growing trend in genetic research: a glowing cat is evidence that it has a unique set of genes.
- [Mayo Clinic/Courtesy]
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Genetically engineered angelfish (Pterophyllum) glow in a tank under a blacklight, at a fish farm in Pingtung, southern Taiwan, September 16, 2010.
- [Pichi Chuang/Reuters]
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A handout photo shows transgenic fluorescent green pigs in Taipei January 13, 2006.
- [STR/Reuters]
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Emperor Scorpion. Naturally occurring.
- [Sam Yeh/AFP/Getty Images]
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Nematode Worm. Green fluorescent protein, introduced into its DNA (2005).
- [Ken Norman, University of Utah/Courtesy]
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Rhesus Macaque Monkey. Green fluorescent protein, introduced into DNA of egg via virus (2008).
- [Anthony Chan, Emory University/Courtesy]
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A combination photo shows a cloned fluorescent puppy, a three-month-old beagle, glowing in the dark under ultra-violet light (top) and under daylight (bottom) at Seoul National University's College of Veterinary Medicine in Seoul May 13, 2009.
- [Jo Yong-Hak/South Korea Scitech Animals Society/Reuters]
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A biologist shows a genetically altered mouse which emits green light in the dark at the Osaka University Microbiology Disease Laboratory 12 June, 1997.
- [/AFP/Getty Images]
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A deathstalker scorpion, Leiurus quinquestriatus. Naturally occurring.
- [Flickr/Furryscaly/Courtesy]

A U.S. researcher has genetically engineered a litter of glow-in-the-dark cats to help shine some light on the problem of fighting AIDS. That got us thinking. . . What other animals have researcgers made glow-in-the-dark in the name of science? Quite a few it turns out. . .