When cats are physically and sexually mature, they show signs of estrus. Generally, cats will go into heat at six months old. Cats usually come into heat during the spring and autumn seasons. Females in heat exhibit mental excitement, restlessness, reduced appetite, and loud nighttime calls known as "cat calling in spring," to attract males. Besides reduced appetite and nighttime roaming, males primarily try to find opportunities to go outside during heat.

　　For owners who want to breed their cats, spring and autumn are the best mating and breeding seasons. The heat period typically lasts 6-10 days, and breeding can begin during the heat peak. If breeding is chosen, owners should select healthy and high-quality mates in advance to ensure the quality of the offspring.

　　When mating, it is important to consider the cat's expected birth date, which is approximately two months and two days from the mating day. For example, if mating occurs on January 20th, the expected birth date will be March 24th. Calculating the birth time helps avoid the rainy season, humid and hot conditions, or extremely cold periods, to prevent kittens from getting sick due to harsh environments at birth. (Source：PetsZone)