About a month ago, I found a small kitten running around outside my apartment. He was very hungry and I managed to catch him by setting a can of cat food outside a hole he was hiding in. I took him to the vet, who determined him to be about 5 weeks old and underweight. He had a clean bill of health as far as no feline leukimia, aids, worms, or fleas, very unusual for a stray. I decided to keep him and named him Jackson, and is getting along great with my two female kitties. My question is, I think he is a Russian Blue. I have looked up characteristics and so far he fits all of them, especially in his coat. Its dark gray and looks like its silver on top. I was wondering if anybody who knows about Russian Blues could determine this for me. Thanks! Here is a picture of him: