Breeding of Russian Blues took a lot of years and tweaking as many breeders had different preferences as to what exactly they thought the Russian Blue should be like. The breed became very varied and finally, North American breeders began to import Russian Blues from Britain and the breed began to stabilize. Russian Blues are known for their skittish, shy personalities and struggled to perform in cat shows. This problem led to a decline in popularity but breeders worked hard to carefully cultivate the desired personality and, since the 1990s, Russian Blues have done much better in cat shows and have become much more popular among fanciers.
Hmmm where did you get this information? I haven't heard of any Bobcat/Siamese crossing. Just because a cat has a bobbed tail, does not mean it was crossed with a Bobcat. When talking Bobcat, do you mean an American Bobtail, or a similar breed, or a true 100% Bobcat. There is a breed of cat that, as the legend goes, has been crossed with a wild Bobcat. The breed is known as the Pixie Bob. I have 4 Pixies and yes, they do have some traits that do resemble a Bobcat. Not just with their coloring and markings, but with their behaviors as well. Amber and Boris, pictured in my signature, are true wild Bobcats. The idea of crossing a Bobcat with any domestic cat is not as easy as some may think. For one, Bobcats are very aggressive breeders and have been known to kill each other while breeding in captivity. The thought of putting any domestic cat in with an intact male Bobcat is just asking for trouble. The legend of the Pixie Bob is that this breeding took place in the wild, with the crossing of a male Bobcat with a female domestic "barn cat". These male Bobcats may have been older males, who no longer could compete in the wild with much younger males. Whether or not this legend is true has not been proven. Yes, the look of the Pixie Bob does resemble a Bobcat to some degree. The Toyger cat, a new breed of domestic cat, has been bred to resemble a small tiger, the same size as most domestics. The coloring and markings are there, but there is now way that this cat was crossed with a tiger. These markings and coloring come about by selective breeding and take years to produce the final results the breeders are looking for.
Currently, most authentic Chausies produced are late generation cats with fully domestic temperaments. Their TICA registration certificates will usually indicate that they are "C" generation or "SBT," which nearly always means they are four generations or more beyond the jungle cat (F. chaus). In cases where they are "A" or "B" generation, it is usually because they have been recently outcrossed to another domestic breed to improve specific cosmetic traits, but the cats are nonetheless more than four generations beyond the handful of nondomestic ancestors.
One important note to keep in mind with this breed is its love of food. It will eat beyond its need and ask for seconds, making it a sure candidate for weight related conditions if it is allowed to eat as much as it wants. The best prevention is measuring the food and giving it only at assigned times of the day, and making sure that everyone in the house knows that they cannot give the cat too many treats or scraps.

The Maine Coon, one of the oldest in North America, was first discovered in Maine, where it is the official state feline. According to the International Cat Association (TICA), they are known and liked for their intelligence, friendliness and good-natured goofiness. (Fetch? Heck yeah!) They prefer to hang with their people versus being coddled by them.

A tigon is a hybrid cross between a male tiger (Panthera tigris) and a female lion (Panthera leo). Thus, it has parents with the same genus but of different species. The tigon is not currently as common as the converse hybrid, the liger.The tigon’s genome includes genetic components of both parents. Tigons can exhibit visible characteristics from both parents: they can have both spots from the mother (lions carry genes for spots—lion cubs are spotted and some adults retain faint markings) and stripes from the father. Any mane that a male tigon may have will appear shorter and less noticeable than a lion’s mane and is closer in type to the ruff of a male tiger. It is a common misconception that tigons are smaller than lions or tigers. They do not exceed the size of their parent species because they inherit growth-inhibitory genes from the lioness mother, but they do not exhibit any kind of dwarfism or miniaturization; they often weigh around 180 kilograms (400 lb).
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