If your female cat has not yet been spayed, she will frequently enter into her heat cycle, also known as "estrus." To keep your precious kitty as healthy and happy as possible -- and also to discourage animal overpopulation -- take her to the vet for spaying stat!
One of the most prominent -- and often earsplitting -- indications that a queen cat is in heat is pure loudness. If your cat is simply being a lot noisier than you are used to, it is most likely due to her heat cycle. Look out for crying and yowling "calling" sounds, although excessive meowing also is very common. If your cat is being really loud particularly during the night hours, get the poor dear fixed immediately!
If your typically aloof kitty is acting in an unusually loving and affectionate manner, she may be in the midst of heat. If she's headbutting you and rubbing her body up against you much more than usual, you probably know the reason! These behaviors are often accompanied by meowing, so take note.
If your queen is licking herself a lot more than usual -- especially around her lower belly and in her genital area -- heat is usually the culprit. Pay close attention to your cat when you think she may just be grooming herself, especially if she's doing it more than before.
Spaying your cat is a time-sensitive situation, especially if she goes outdoors a lot. Don't just wait around for the signs that she is in heat, meowing or else. Wee female kittens as young as 4 months old frequently get spayed, so don't delay. Spare your precious cat the physical stress of carrying a litter and help keep feline overpopulation in your community under control.