Tortoiseshell AKA "Tortie": Torties are not true tri-color cats because they do not all contain white. Instead of solid blocks, torties' coats weave the black and red throughout, creating a tapestry of color. They can evoke a feeling of fall. Tortoiseshell cats may also be dilute, with softer versions of the colors. Like the tabby, some torties may also have white accent markings, creating a "tortie with white." They also sometimes have an interesting mix of tortoiseshell, with a bonus of tabby patterning mixed throughout. These cats are referred to as torbies. It should be noted that white plays a very small role in the tortoiseshell pattern; most of the color weaving is done with the red and black components.
Adding to the captivating physical qualities of this breed is the eye color. The eyes are yellow while the Russian Blue is a kitten, and by four months there is a bright green ring around the pupil. As the cat matures, the eye color graduates into a bright, vivid green, aesthetically intensifying the already remarkable blue-silver coloring of the cat. The eyes are wide set and round, and only slightly slanted at the upper corners, giving the Russian Blue a sweet expression that matches well with its gentle temperament.
We can only recommend you to take your kitty to the vet. It seems like s/he still has an appetite, which is a good sign, but panting might be an indicator for something else. Are there any other signs of discomfort? Salivating or does s/he have blue gums? Whether yes or no, you might want to go get a check-up to make sure everything is safe. A veterinarian will know how to guide you and recommend treatment if there is an underlying medical issue. Best of luck!
The Russian blue is a sweet-tempered, loyal cat who will follow her owner everywhere, so don't be surprised if she greets you at the front door! While she has a tendency to attach to one pet parent in particular, she demonstrates affection with her whole family and demands it in return. It's said that Russian blues train their owners rather than the owners training them, a legend that's been proven true time and again.