The Russian Blue is not believed to be related to the other three shorthaired solid blue breeds: Thailand’s Korat, France’s Chartreux, and Britain’s British Blue (now called the British Shorthair). The four breeds have distinct differences in coat type, conformation, and personality, although the Korat, Chartreux, and Russian Blue share a similar silver-blue sheen. Since all four of these breeds have been around for so long that their ancestries are shrouded in legend and conjecture, a common ancestor is possible.
The Russian Blue has a reputation as a gentle, quiet cat, somewhat shy, but don’t get the wrong idea. This cat may have a reserved nature, but he loves to play (being especially fond of retrieving) and enjoys jumping or climbing to high places where he can study people and situations at his leisure before making up his mind about whether he wants to get involved. Guests will not receive his immediate attention and may never see him unless he decides they are worthy of his notice, but toward family members, especially his favored person, he is ever loyal, following them through the house and even riding on a shoulder. The Russian Blue is a sensitive cat who doesn’t like to be ignored and will be hurt if he doesn’t receive the same amount of affection he gives. Lack of attention can cause him to become anxious or fearful.
Rapid breathing (tachypnea) is a respiratory disorder characterised by abnormal breathing that is rapid and shallow. It is caused by a reduced level of oxygen, mechanical disorders (where the lungs aren’t able to expand as they should, usually due to a build-up of fluid in or around the lungs), and physiological disorders in which the cat’s respiratory centre in the brain is over stimulated.