Methods for purchasing Russian blue cats:

1. Observe the kittens. Take a few minutes to observe and look for kittens that are alert, playful, curious, and don't want to be played with.

2. Check the coat. The blue cat has dense and soft thick fur all over its body. It is a double-layered fur, which feels as smooth as velvet to the touch, and shines with a silver-blue sheen that spreads out from the body. Separate the blue cat's coat and examine carefully for possible black spots of fleas that can act as vectors for scrub typhus.

3. Check ears and eyes. Ears should be clean and free of wax. The third eyelid, the nictitating membrane, cannot be longer than the eye and cannot contain any secretions.

4. Check the mouth. Take a look inside a blue cat's mouth. In older cats, there may be cracked teeth, gum disease, or cavities.

5. Check the anus. Lift the cat's tail to make sure there is no diarrhea.

6. Final selection. Schedule a veterinary exam to determine if your blue cat has been vaccinated.