What and When is Kitten Season?

"Kitten season" sounds like a whimsical folktale of purring, sweet-faced kittens floating on fluffy clouds and raining from the sky, softly landing on purple toadstools amidst fluttering butterflies. But far from the wondrous miracle of new life it may conjure up in cat lovers' minds, kitten season is, in reality, a chaotic time when litters and litters of feral and domestic kittens are born.

Group persian kittens sitting on cat tower
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Well-meaning people scoop up the ferals to take them to shelters for saving, not realizing that shelters are overrun already. Many people who do not spay or neuter their pets do the same thing with their 'unwanted' litters of kittens.

Shelters are, therefore, overwhelmed with the flood of tiny, big-eyed fluffballs that need intense hands-on care in most cases. Consequently, in many shelters, kitten season becomes euthanasia season. Overburdened and understaffed, shelters simply don't have enough hands to save them all. Due to their fragile immune systems and labor-intensive, round-the-clock care and socialization needs, hundreds, if not thousands, of kittens are euthanized each year.

When is kitten season?

Kitten season is sparked by the days getting longer, thus kicks off in early spring in many states. As the days get warmer in most places in the U.S., kitten season is already in full swing and it will last until fall and even into early winter. In places like Florida, for cats, hot summers and mild winters are conducive to year-round breeding so kitten season lasts all year long.

What is kitten season?

Kitten season defines the period in which female cats deliver oodles upon oodles of kittens, one litter after another. Most animals mate and give birth in spring due to longer days and mild temperatures which gives access to more food meaning higher survival rates for the offspring. But, unlike other animals, cats can continue to reproduce until the weather turns cold.

maine coon kitten on scratching post
credit: Nils Jacobi/iStock/GettyImages

Since the female cat's reproductive cycle is influenced by warmer weather and the amount of daylight in a 24-hour period, as the winter solstice of December 21 approaches and the days get longer, an intact female's cycle is triggered and her first heat arrives by January 15. With a gestation period of about 60 days, the first litters of the kitten season start arriving around March 15 every year.

Kitten season continues as the year progresses towards the vernal equinox on September 21, and since the amount of daylight is decreasing, the feline reproductive cycle also decreases.

Help by spaying and neutering your cats

It's a strong message to pet owners that resonates loud and clear across the land: spay and neuter your cats and dogs. Everyone can make a difference during kitten season, and first and foremost is ensuring your cat does not have unwanted kittens. It starts by spaying your female cat or neutering your male cat, especially if she or he goes outside even just in the backyard.

If you find a litter of kittens, whether in the park or in an alley, don't assume they are abandoned. Leave them where they are and monitor them from a distance every couple of hours over a period of 12 to 18 hours. If they seem well-cared for and not in distress, chances are the queen will return. If predators are lurking nearby or other dangers are imminent, move the babies out of harm's way to a spot nearby where their mother can easily find them. If the mama cat does not come back, take the babies to your vet, a rescue, or a community TNR agency. Unless a shelter has a no-kill policy, most will euthanize kittens who they cannot adequately care for.

After placing the kittens safely, be prepared to follow-up and watch for mom cat to return to the area where you found the kittens, and report to the rescue so they can come out and trap her, or you may be asked to place a trap and work with the rescue or TNR program toward the goal of reuniting the family.

Group persian kittens sitting on cat tower
credit: anurakpong/iStock/GettyImages

Once the babies are weaned and old enough, they are spayed, neutered, and adopted. The queen will also be spayed, and depending on her temperament or potential for domestication, may either be fostered for socialization then adopted, or returned to the area where she was found. Often, feral adults who have had no positive contact with humans in their entire lives cannot be successfully domesticated. Trap, spay, neuter, and return programs, known as TNR, throughout the country have proven to be a successful tool for reducing unwanted kittens.

Help by fostering orphaned kittens

During kitten season, fostering a litter of orphaned kittens offers a rewarding opportunity to save lives. And for animal lovers, it can be a wonderful life experience, and many continue fostering kittens year after year. Many people choose to foster moms and babies together. In this case, mother cat looks after her babies and you care for her.

Or you can choose to foster kittens at various stages depending on your capabilities, experience, and the level of care you wish to provide.

If you are interested in fostering, consider the following kitten groups who are in dire need:

  • Newborn or Neonate Kittens: Ranging in age from newborn to about four weeks old, these kittens require bottle feedings every four to six hours 24/7. When a kitten is about three weeks old, he can start going up to eight hours overnight without a feeding. Generally, only volunteers with experience in raising kittens will qualify. Also, kittens at this age need to be stimulated to urinate and defecate every few hours.
  • Transitional Kittens: These four- to six-week old orphan kittens need to be separated from their mother for some reason. At this stage they are just starting to eat solid food, but may require supplemental bottle feedings a couple of times a day.
  • Weaned Kittens: Ranging in age from five to more than eight weeks old and eating solid food, weaned kittens are the most entertaining age group to foster. With their hilarious, super-energetic antics, these cuddly kitties can melt your heart and often are adopted by their foster family. Kittens remain in foster care until they are a minimum of 8 weeks old and two pounds at which time they are ready to be spayed and neutered.
  • Kittens Needing Socialization: Feral kittens who arrive at the shelter often have had little to no contact previously with humans. They need to be socialized before qualifying for adoption. With proper handling, love, and attention, kittens younger than about four months old can be socialized. If fostering one or more kittens in this group appeals to you, many shelters/rescues offer special training.

And the best part of fostering kittens is that you get first dibs at adoption! Be careful, though, it's hard to choose just one.