The Russian Blue is a smart, well-behaved, contemplative, and loyal breed. Often seen as shy around strangers, they are actually assessing the new people to determine whether they are worthy of their affection or not. And they can be incredibly affectionate. They are one of the breeds smart enough to train their people, corralling them to get them food, or bringing them toys to play with them. Also, they are a very vocally expressive cat, in that they not only meow to get attention, but they have a wide meow-cabulary, using different tones and patterns to express different feelings. All in all, this is quite an interesting breed. .