Class clown — there’s always one! Purina notes that these confident and friendly creatures stand out because of their clowning around. These short-tailed cats, who were bred in the U.S. starting in the 1960s, according to TICA, make a great family pet since they’re sociable with humans of all ages and even other friends of the four-legged variety. They’re all about fun — but aren’t in need of your undivided attention — and don’t tend to attach themselves to one person.  
The Russian Blue is a robust breed, with firm muscles and an overall dose of good looks. It is physically in the same class as the Korat and Oriental Shorthair -- long, slender, elegant. It is of a medium size, and muscular, but compared to a swimmer in the compactness of its musculature. When it is in full motion and stretched out, one can see that it has a long, graceful neck, but the neck is hidden by thick fur and high set shoulder blades when the cat is sitting, making it look as though it has a short, thick neck.
It sounds like Arwen has some nerve damage to the plexus of nerves supplying the fore leg, this may be due to bruising or avulsion, you should visit your Veterinarian as soon as possible for an examination to determine the cause and the severity. There isn’t anything I can recommend for you to do at home for this condition. Regards Dr Callum Turner DVM
The physical appearance of the Archangel is so appealing that you, family members and guests will be drawn to the feline right away. The silver-tinged blue coat, accompanied by intelligent, slightly sloped green eyes add elegance and ambiance to any room. Once you get to know your cat and the Foreign Blue accepts, then it becomes evident that they make the perfect pets. Their intelligent and playful nature will go a long way towards a fulfilling relationship in any household.
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.
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