Pedigreed British domestic cats have a thick coat and a large face, but their shorter coat and stockier build make them recognizable. One of the most well-known color variations is the "British Blue," which has a solid grey-blue coat with orange eyes and an average tail length. Other colors and patterns of the breed have been produced, such as tabby and colorpoint.
Shorthairs don't mind where they reside as long as their owners love them and interact with them often. There is a nice middle ground between playful and wanting to laze around all day. You don't have to worry about him getting into mischief while you're at work if you want to play chase-the-little-red-laser-beam.
There are few breeds that can compete with British shorthairs in terms of temperament: they're energetic without being obnoxious, friendly without being smothering, and smart without feeling the need to brag about learning how to open your refrigerator. If socialized early on, British shorthair cats are friendly and will treat everyone in the household as a good friend, including dogs and other cats.
According to the UK breed committee, the British Shorthair has a lifespan of 14–20 years. The average life expectancy of a dog in an English veterinary facility is 11.8 years. According to Swedish insurance data, the average lifetime of the breed is around 12.5 years. Most British Shorthairs (82%) and most of the females (54%) lived for at least 10 years.
There is a possibility that the breed will develop hypertrophic cardiomyopathy (HCM). HCM was found in 20.4% of males and 2.1% of females in a Danish prevalence survey of more than 329 cats. In addition, 6.4% of men and 3.5% of women were found to be ambivalent. The Danish Fife member, Felis Danica, has made HCM testing of breeding males mandatory.
Polycystic kidney disease is a serious health concern for dogs of this breed (PKD).
Appearances Are Everything in Life.
Brittish Shorthair is a robust, powerful-looking cat with rounded paws and a medium-length blunt-tipped tail. It's a British Shorthair. When grown, the male's broad cheeks and huge round eyes (which are a rich coppery orange in the British Blue and elsewhere vary in color according on the coat) are most striking. The head is large and rounded with a short nose. Their huge ears are erect and positioned far apart on their heads. 
Grey Scottish Folds are commonly mistaken for the British Blue variety of the British Shorthair, a breed that is closely related to it. In contrast to the Fold, the Shorthair's ears have pointed triangles, whereas the Fold's are softer and folded.
They mature more slowly than the majority of cat breeds, with full physical development occurring around the age of three years. Atypically, they are a markedly sexually dimorphic breed, with females averaging seven pounds and five kilograms and males averaging nine pounds .
The cat is a domestic species of small carnivorous mammal. It is the only domesticated species in the family Felidae and is often referred to as the domestic cat to distinguish it from the wild members of the family.
The Cat Fanciers' Association (CFA), the largest American cat registration organization, recognizes forty-four(44) breeds. With member organizations in forty countries, the Fédération Internationale Féline recognizes 48 breeds divided into four categories.
The fact is, many people have cat allergies. However, it's possible that cats can also have human allergies.