No, you can't have a glow-in-the-dark kitty.
But never fear, the SciBlings and I have other ideas for holiday gifts.
If you really have your heart set on glowing animals, and you don't live in California, you can get a tankful of lovely glowing fish, genetically engineered with a different version of the protein (GFP) used to make the glow-in-the-dark cats.
If you prefer clothing over pets, there's the pathogenic line of formal wear.
If the person on your list says "yuck!" and acts a bit squeamish when you talk about bodily fluids and tell them that genomic DNA looks just like snot, check out Karmen's collection of functional fractals.
And, perhaps you're not giving gifts but requesting them? Chad has ideas. He's put together a suggestions for a gift that he would like people to give to him.