Neutering your cats...

16 wks Healthy kittens can be neutered.. 
please have them done.
NO MORE breeding KITTENS, 
Female cats do not need one litter before being done....
Don't breed RESCUE ... 

Question: How long are cats in heat for?
Non-spayed female cats will go into "heat" or estrus seasonally in the spring and fall, and may go into heat several times during the season. An intact (not spayed) female cat of reproductive age is called a queen.
  • The first estrus cycle usually occurs by age 6-12 months; for some cats as early as four months of age, for others not until age 12 months or so.
  • Cats are considered to be seasonal breeders; most often showing signs of mating behavior in the spring and fall.
  • Cats are induced ovulators, meaning that they only ovulate (release an egg from the ovary) if mated.
  • If not mated (no ovulation), the estrus phase of the cycle will return in 1 - 3 weeks.
  • Multiple matings produce more ovulations; more than one male can be the sire of a litter.
  • Cats can get pregnant during their first heat cycle, but this is not advisable as a 6-month old cat is not yet fully grown/mature, and complications for the mother and the kittens are more likely.

For cats that will be pets, it is recommended to spay them before the first heat, eliminating the risk of accidental pregnancy and reproductive diseases later on in life. Cats may be spayed while in heat (or pregnant), but there is additional risk due to the engorged vessels and tissue of the reproductive tract -- a higher chance of bleeding during surgery or other complications. The cost of surgery while in heat or pregnant is often higher as well.