The Russian Blue is a cat breed that comes in colors varying from a light shimmering silver to a darker, slate grey. They develop close bonds with their owners and are sought out as pets due to their personalities, beauty and coat. It is their short, dense coat which has been the hallmark of the Russian breed for more than a century. The dense coat stands out from the body and one can draw patterns in the coat that will stay until one smoothes them out again. They are also considered to be hypoallergenic.