How Long Do Siamese Cats Stay Pregnant – Timeline & Stages –

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The birth of a new life is an exciting time for humans and pets. If you think your Siamese cat is expecting, you may be exploding with questions about the process and wondering how you can help your feline through the whelping process. So how long do Siamese cats stay pregnant?

A Siamese cat is pregnant on average for 65 days from conception, emerging at around nine weeks. The total gestation period can range from 58 to 72 days.

If you have a pregnant Siamese cat and want to know what to expect, don’t worry, we’ve got you covered. While your mother-to-be, or “queen,” will tap into her instincts to bring her little Siamese babies into the world, you’ll feel better when you have the information you need to make the transition as easy as possible.

Here’s the A-Z guide to helping your Siamese cat through her stages of pregnancy.

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How to tell if your Siamese cat is in heat

Your cat is “in heat” when her body is preparing for fertilization. Signs that your Siamese cat is in heat include:

● Vocalize loudly and often

● Spray urine in the house

● Raising his hindquarters in the air

● Attention-seeking more than normal

● Rolling on the floor

● Asking out (even if it’s an indoor cat)

Heat cycles for Siamese cats can occur as often as every 2-3 weeks, which makes it easier to imprint them. They can even receive semen from multiple males during the same heat period, resulting in a rainbow of different fur patterns that can occur in one litter.

Unlike human mothers whose bodies ovulate on a regular cycle, a cat’s eggs are triggered to be released by a sexual encounter with a male cat. This is called induced ovulation.

Feeding a pregnant Siamese cat

During this exciting time, your pregnant mom will need more calories and nutrients than regular adult cat food.

Many sources recommend feeding your cat high-quality kitten food with more protein and other nutritious compounds to give it the boost it needs.

It’s also essential that your Siamese drink plenty of fresh water to help keep them hydrated.

Siamese Cat Pregnancy Timeline

Unlike human pregnancy, which lasts nine months, a Siamese cat’s pregnancy only lasts nine weeks! Here’s a week-by-week breakdown of what to expect when your cat is expecting.

week of pregnancy Kitten development Changes in your Siamese
Week 1 The sperm attach to the eggs which then implant in the uterus No noticeable change
Week 2 The embryos begin to develop and the placenta begins to form No noticeable change
Week 3 Brains, legs, circulatory systems and internal organs begin to form Nipples become larger and/or darker
Week 4 Skeletons and nervous system develop First signs of morning sickness
Week 5 Nerves and muscles develop Belly fills and kittens kick
Week 6 The skin thickens and the tail lengthens Increased appetite
Week 7 The fur grows Belly full, drink more
Week 8 Almost fully formed Loss of fur around the nipples
Week 9 fully trained Show signs of labor

Week 1

Once your cat has mated with her beau, the male cat’s sperm will attach to the eggs. These fertilized eggs will then be implanted in the uterus.

At this early stage, you may not notice any changes in your Siamese cat’s appearance. If you can, you should try to mark the suspected fertilization date to help you calculate your pet’s due date.

Week 2

During the second week of your cat’s pregnancy journey, the embryos will begin to develop and the placenta will begin to form in the uterus.

Your Siamese will likely still display his typical cat behavior. Continue to observe him over the weeks and do not hesitate to call your veterinarian if you notice any behavior that worries you.

Week 3

This is the week you may start noticing physical changes in your Siamese. Her nipples are probably getting bigger or darker. This will be more apparent in the light tones of the Siamese.

In your cat’s belly, future kittens begin to form their brains, legs, circulatory system and internal organs. It’s a big week for them!

It’s a good idea to take your Siamese cat to the vet for a checkup to make sure he’s healthy and sturdy enough to handle the impending changes to his body. They will also let you know if any adjustments need to be made to your Siamese cat’s diet or routine.

An ultrasound can confirm your cat’s pregnancy and even discern the little heartbeats of kittens in her belly! However, they are not entirely accurate in giving you the final number of descendants.

Week 4

During this next week of pregnancy, the kittens’ mini-skeletons and nervous systems are developing. They change status from embryo to fetus. Congratulations!

This is the week when you might start noticing behavioral changes in your expectant mother cat. The first signs of morning sickness – vomiting or decreased appetite – will start to appear.

As with humans, everyone’s experience is different and your cat may or may not show signs of morning sickness. That’s why it’s always good to keep a close eye on it and familiarize yourself with its tendencies.

Making a small amount of food available more often during the day can help your Siamese with his morning sickness. Frequent vomiting and minimal feeding can be a cause for concern and a reason to consult your veterinarian.

From this point on, you should avoid picking up your pregnant cat so you don’t inadvertently hurt her kittens.

Week 5

At this stage of pregnancy, the kitten’s tiny nerves and muscles begin to develop. As their muscles get stronger, unborn Siamese kittens will start moving and kicking in their mother’s womb.

By now you may start to notice your Siamese queen filling out! Your vet might even be able to feel the kittens in your cat’s belly, although a subsequent X-ray is the most accurate method of determining numbers.

Week 6

During the sixth week of pregnancy, the skin of unborn kittens begins to thicken and their little tails become longer and more distinct.

Unlike the decrease in appetite of previous weeks, your Siamese cat may have done a 180 by this point and beg for more food! Her body is gearing up to feed these adult kittens once they’re born, and her needed nutrients have increased exponentially.

Continue to feed your Siamese several small meals throughout the day. As mentioned earlier, it can be helpful to mix kitten food with their regular meals, as it is higher in nutrients and calories.

This can benefit kittens as they grow and mature and meet the increased energy needs of the Siamese Mom.

Week 7

During week 7, kittens develop their soft baby fur.

At this time, your Siamese’s pregnant belly will be very apparent. She will also want to drink more, so make sure you have plenty of fresh water available to her at all times.

After the 45th day of pregnancy, you can safely take an x-ray to confirm the number of kittens inside.

Week 8

Now your pregnant princess will be waddling with a clearly pregnant belly.

She might lose some fur around her nipples, which makes nursing the kittens easier. Do not worry! It will grow back after delivery. You may also start to see droplets of milk on the tips of the nipples as they prepare to feed the little mouths.

If your Siamese cat is nagging you for your attention, give her as much love as you can! On the other hand, she might prefer to be left alone as she prepares to welcome her little ones into the world.

Siamese cats will choose a place to “nest” – the place where they would like to give birth. It will be helpful for her if you bring her food and water bowls to her nesting place for easy access.

Week 9

Your Siamese cat is nearing the end of her pregnancy journey! Kittens should be fully trained and ready to go out at any time.


You may notice the following symptoms in your Siamese as she prepares for labor:

● Decrease in body temperature about 1 degree (below 100℉)

● Increased vocalization and/or restlessness

● Decreased appetite

● Preference for isolation

● Some vulvar discharge

If the secretions are dark or black or your cat is straining without any sign of kittens, call your veterinarian immediately.

How to help your Siamese cat during labor

Keep your vet’s number handy for any immediate questions. Line the area with towels and watch your cat’s labor process.

Each kitten will be born in its own amniotic sac, which the mother will remove by licking it. If it doesn’t, rub gently with a towel to remove it. She should also bite the umbilical cord.

The work can sometimes take up to 12 hours. Do not attempt to move your cat or her kittens at any time during labour. This can cause stress at this vulnerable stage.

How many kittens do Siamese cats have

Siamese cats have an average of 4-6 kittens in a litter, although they have been known to give birth to more kittens than other breeds.

This is important information to know when preparing to welcome new kittens into your home. Knowing how many kittens they will have will help you plan food housing, veterinary exams and everything else.

Most newborn cats can get their basic food and needs from their mother. However, if you want to help them, there are special foods especially for mother cats and kittens. Nutrition is especially important in the early stages of birth.

Managing a Cat’s Pregnancy

A cat’s pregnancy can be both exciting and scary for pet owners. If this is the first time you’ve experienced this with your cat, don’t worry! The most important thing to remember is that your cat should always be comfortable in its surroundings. The first thing to do is to make sure the cat is safe, well fed and has space to do its job.

I hope you found the information useful. If you suspect your Siamese cat is pregnant, refer to the chart above to determine what stage she is currently in. This can help you prepare for those future kittens!

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