Now, that may have to happen if a kitten has a highly dangerous disease. Many breeders will. But, buy from a reputable breeder, and there is someone you can call on for help. If you are buying a cat as a pet, reputable breeders will require that you neuter the cat. To the best of my knowledge, there is no pet store chain which has a neuter policy in force which has a high compliance rate.
Breeders are more careful.
A show cat is one which can be shown in competition and which will probably win, or already has won, titles or awards in competition. A quick lesson in the language of breeders and exhibitors about the quality of cats is important when you begin to talk about the quality of cats. When you are looking at cats and kittens, ask what the breeder actually means by the terms that breeder uses. These reasons include matters such as color and color placement, relative size or perfection of physical features such as ears, tail, etc., and other subjective, cosmetic features, measured against the standards of perfection as adopted by a specified cat federation. Pet quality does not mean that the kitten is unhealthy, but merely that we do not believe that it is suitable for showing as a championship cat.