The number of litters a cat can have in a year depends on the interval between its estrus cycle and its birthing period, as well as the mother cat's age and health. Generally, there is a three-month interval between estrus and birthing. Cats can go into heat in any season, but are more likely to do so in spring and autumn, primarily between February and April, and September and November. Therefore, a cat can have 2 to 4 litters of kittens a year.

At the same time, the mother cat's age and health should also be considered. If the mother cat is too young or in poor health, frequent breeding is not recommended, as it may negatively impact her health. Therefore, it is best to consult a veterinarian before considering breeding your cat.