These standards change from time to time, according to the current trends of the field, and the names used to indicate specific breeds are different in the United States and in Europe. In addition, there are some breeds that are recognized as separate breeds in the United States, but not in Europe, and vice versa. Professional breeding of cats in catteries is a complex business. You may think that it is enough to buy any purebred cats and start breeding them. In fact, it requires a good understanding of genetics governing each breed and detailed knowledge of the breeding history of the specific breeding pair.
Most pedigree cats are unsuitable for further breeding.
In fact, only few of the kittens born to a pair of pedigree cats of the same breed have the right genetic qualities to be used as breeding cats. It is especially important to know the diseases and genetic flaws typical of each breed, in order not to breed cats that have these flaws. Pedigree cats are often more sensitive to diseases and stress, and hence, more money and time must be invested in maintaining their health and living conditions. When cats are kept for breeding, they also need special habitats and nutrition. All these factors greatly increase the cost of running a professional cattery.