when do cats go into heat

Cats typically go into heat, also called the estrous cycle, for the first time around 6 to 7 months of age, though some may start as early as 4 months and others as late as 10 to 12 months. The timing depends on factors such as breed, weight, environment, and geographic location. For example, Siamese cats may go into heat as early as 4 months, while larger breeds may take longer. The heat cycle usually recurs every 3 to 4 weeks if the cat does not mate, especially for indoor cats that may cycle year-round due to artificial lighting and temperature control. The duration of each heat cycle can last up to 7 to 10 days, but it can range from 1 to 21 days in some cases. During heat, cats display behaviors such as vocalizing loudly, increased affection, restlessness, rolling on the floor, and assuming a mating position. Cats can go into heat multiple times a year, commonly from spring through autumn in outdoor or wild conditions, but indoor cats may go into heat year-round. Spaying is recommended to prevent pregnancy and reduce health and behavioral issues related to the heat cycle.