As with so many cat breeds, little is known of the Russian Blue’s origins. He probably does come from Russia—his thick coat is surely that of a cat from colder climes—and he is considered a natural breed, meaning Matushka Nature created him, not the handiwork of humans. The Russian Blue’s development as a breed, however, took place primarily in Britain and Scandinavia, starting in the late nineteenth century, when showing and breeding cats became a popular activity.

Watching the rate of breathing is one of the simple observations that you can make on a pet cat at home. This cat has a problem known as "tachypnoea", which means rapid breathing. IF you watch her side carefully, you'll notice that her sides are moving much more quickly than a normal cat at rest. Her problem is being investigated, so the precise cause is under review, but it's most likely that she has "hyperthyroidism", caused by a benign tumour on her thyroid gland (Fluffy Kitty) is a participant in the Amazon Services LLC Associates Program and the Partner Program, affiliate advertising programs designed to provide a means for sites to earn commission fees by advertising and linking to and When you make a purchase via our links, Yoda gets a treat! Thank mew!
Still, due to their characteristic nervousness, Russian Blue’s generally did not perform particularly well at shows, leading to a decline in their popularity into the 1980s. When breeders focused their attention on improving the personality of the breed through selective breeding, and by training their kittens to stay calm in a show environment, the Russian Blue once again became an attention getter and award winner. Since the 1990s the Russian Blue has been winning regional and national awards consistently, and today it enjoys a well-deserved and steady popularity.
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.
Hypoglycemia is a life-threatening condition in which the blood sugar levels drop dangerously low. The pancreatic beta cells produce the hormone insulin which helps to move glucose from food into the cells (for energy).  It is not a disease in itself, but it is a symptom of an underlying disorder. Causes include excessive insulin administration in the diabetic cat, decreased glucose production (missed meal, vomiting, certain medications, glycogen storage disease), and excessive glucose consumption due to sepsis (bacterial infection of the blood).
Characteristics: You will first be struck by the beautiful silvery-blue coat of the Russian Blue. Their coat gives them an elegant appearance that is distinctly their own. The Russian Blue is a medium size cat that is muscular, with long legs and a long body. They are fine boned but often appear larger because of their thick double coat. They have large ears that are set far apart and are somewhat pointed. They have a medium, wedge-shaped head and, in addition to their uniquely beautiful coat, they have striking green eyes. They are wide-set and their vivid green color stands out because of the surrounding blue coat. They are truly a lovely and very beautiful cat.
Lethargy and increased respiratory rate are not specific symptoms as they are shared with many conditions; however I’m concerned that they are a common sign that an animal is in pain, but without examining Marilyn I cannot say whether she is in pain or there is another cause for the symptoms. You should visit your Veterinarian for an examination to be on the safe side especially if this has been going on for a day or more. Regards Dr Callum Turner DVM