Feline Genitalia Guide (Written By a Vet) - Cats.com (2024)

Feline Genitalia Guide (Written By a Vet) - Cats.com (1)

Determining whether a cat is male or female can present a challenge. While determining the sex of an adult cat can be tricky, it can sometimes seem nearly impossible in kittens!

Understanding the differences between male and female anatomy can help make this process easier.Read on for details on the feline reproductive system, and scroll down to the bottom of this article for a feline genitalia guide that will help you to identify the differences between male and female cats.

The Female Reproductive System

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First, let’s talk about the female reproductive system in cats.

The primary sex organ in female cats is the ovary. Female cats are typically born with two ovaries, which begin to produce eggs and sex hormones once a kitten reaches approximately six months of age.

The female sex hormones play an important role in the sexual development and pregnancy of intact female cats. Estrogen is required for the development and maturation of eggs, while progesterone acts primarily to prepare the body and uterus for pregnancy.

The ovaries are located on either side of the body, near the kidneys. They are connected to the uterus by oviducts, also known as Fallopian tubes. There are two oviducts, one for each ovary.

When an egg is released from the ovary, it travels down the oviduct towards the uterus. The oviduct is where fertilization with sperm occurs; the fertilized egg then enters the uterus to implant in the uterine wall.

The uterus of a cat, like the human uterus, is where pregnancy develops. However, the uterus of a cat has a very different shape than a human uterus. While a human uterus looks like an upside-down pear, the feline uterus consists of two long uterine horns, connected in a “V” shape.

The feline uterus is described as bicornuate, meaning “two horns.” These long uterine horns allow for multiple kittens to simultaneously develop within the uterus.

The uterus is sealed off from the outside world by the cervix. The cervix remains tightly closed much of the time, especially during pregnancy. This helps keep bacteria from entering the uterus and causing infection.

The cervix separates the uterus from the vagin*, which is a muscular tube that connects the uterus to the external vulva.

The Estrous Cycle

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Cats go into estrus, or heat, seasonally. Their estrous cycle, or heat cycle, is controlled by day length. Outdoor cats have more frequent estrous cycles in the spring and summer, when the days are longer. Thanks to artificial lighting, however, indoor cats may cycle year-round.

When the brain senses adequate daylight, it releases a hormone called follicle-stimulating hormone (FSH). Follicle-stimulating hormone stimulates egg follicles within the ovary to develop and mature, while also stimulating the ovary to produce estrogen. This hormone cascade triggers the beginning of the estrous cycle.

There are a number of behaviors that may indicate that your cat is in heat. Unlike dogs, cats do not typically have visible bleeding while in heat. Instead, your cat may become extremely affectionate, often rubbing against their owners or rolling on the floor to solicit affection. She may urinate more often than usual or mark vertical surfaces outside her litterbox.

Finally, you may notice an increase in the number of intact male cats (tomcats) that are hanging around your house, because they are attracted by the smell of a female in heat.

Unlike many other mammals, cats do not automatically ovulate (release eggs) once they are in heat. Instead, cats are induced ovulators. They do not ovulate until they mate with a male. Mechanical stimulation of the vagin* and cervix leads to the release of luteinizing hormone (LH), a hormone that triggers ovulation. If a female is not bred while she is in heat, no eggs will be released.

The Effects Of Spaying A Female Cat

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You may choose to have your cat spayed in order to prevent pregnancy and lower the risk of health issues related to the female reproductive tract.

When a female cat is spayed, her entire reproductive tract is removed, from the ovaries to the cervix. (Less commonly, veterinarians may perform a surgery called an ovariectomy, in which the ovaries are removed but the oviducts, uterus, and cervix are left behind.)

There are two primary effects of this surgery. First, the ovaries are no longer producing eggs; therefore, the female can no longer become pregnant. Additionally, the ovaries are no longer producing sex hormones.

Therefore, the spayed female cat does not experience the same hormonal fluctuations that an intact female cat does. Spayed female cats will no longer go into heat or attract males.

The long-term benefits of spaying your cat are numerous. Spaying a cat early in life significantly reduces the risk of developing mammary (breast) cancer, which is often malignant in cats and potentially fatal.

Additionally, spaying your cat also eliminates the risk of ovarian, uterine, and cervical cancer. Spayed female cats are also less likely to roam, less likely to mark indoors, and tend to have a longer lifespan than intact female cats.

The Male Reproductive System

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The male reproductive system has unique features that affect multiple aspects of the cat’s physiology, behavior, and more.

The primary sex organ in male cats is the testis or testicl*. The testes produce sperm and the male sex hormone, testosterone. Testosterone is required for maturation of the male reproductive organs (such as the prostate) and for sexual behavior.

The testes are housed within the scrotum. The internal body temperature is too high to allow for sperm to mature; the scrotum allows the testes to remain outside the body, at a cooler temperature that is conducive to sperm production.

Sperm travels from the testicl* to the epididymis. Sperm mature in the epididymis and are stored there until ejacul*tion. They sperm are then combined with the fluid portion of sem*n, which is created by the prostate gland, and travel through the ductus deferens to the urethra for ejacul*tion.

The Effects Of Neutering A Male Cat

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Neutering a male cat helps to reduce the risk of health issues and behavioral problems related to the reproductive system.

Neutering a male cat not only stops the production of sperm, it also stops the production of testosterone. This means that your neutered male cat is less likely to roam, less likely to urine-mark, and less likely to show aggression towards house-mates. Additionally, neutering your cat eliminates the risk of testicular cancer and reduces the likelihood of prostate problems.

Determining The Sex Of Kittens

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Unlike dogs, which have an obvious penis that is visible from an early age, the differences between male and female cats are relatively subtle. Male kittens often do not have visible testicl*s until they are two to three months old, which can make determining their sex before this time more challenging than it is in adult cats.

When determining the sex of a kitten, the first step is to lift the kitten’s tail. When you do so, you will see the anus located immediately below the tail. Below the anus is the genital opening.

This opening is round in males, while it appears as a vertical slit in females. Additionally, the genital opening in a female kitten will appear to be closer to the anus than the genital opening of a male kitten. If testes are beginning to descend into the scrotum, you may notice a small swelling between the anus and the genital opening of a male kitten.

You can also use punctuation marks as an analogy for feline genitalia. A male kitten’s genital area will look like a colon ( : ) with the anus on top and a round genital opening below. A female kitten’s genital area will look more like a semicolon ( ; ) with the anus on top and a vertical slit of a genital opening below.

In addition to the genital openings, color can be helpful in determining sex. The overwhelming majority of calico and tortoiseshell cats (black, white, and orange in combination) are females; it is rare to see a calico or tortoiseshell male.

Orange cats are usually males, although the link between orange color and male sex is much weaker than the link between calico/tortoiseshell color and female sex.

Consult Your Veterinarian

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If you have any questions about your cat’s reproductive health or about how to sex a kitten, consult your veterinarian. They can perform a thorough physical exam and answer any questions that you may have about your cat’s genitals or reproductive health.

Frequently Asked Questions

What does a male cat’s privates look like?

If you lift a male cat’s tail, you will see two round openings. The larger opening (closer to the tail) is the anus, while the smaller opening is the genital opening. This in in contrast to females, whose genital opening looks more like a slit than a round opening.

At what age can you tell the gender of a kitten?

Even veterinarians may struggle to determine the age of a newborn kitten. In most cases, the age of a kitten becomes easier to determine at approximately 4-6 weeks old.

Are male cats better than female?

Every cat owner has their own distinct preference. Males have a reputation for being more friendly than females, which is appealing to many people, but they also may be more likely to urine mark within the home. Like humans, though, cats are individuals. While people may attempt to generalize about the differences between them, there are always exceptions to those stereotypes.

Feline Genitalia Guide (Written By a Vet) - Cats.com (2024)

FAQs

What is a female cats privates supposed to look like? ›

Females: The genital opening appears as a vertical slit and is located directly below the anus. Males: The penis appears as a small round dot and is a greater distance from the anus, with the testicl*s located in between.

What does a hermaphrodite cat look like? ›

The pet may appear to have a large cl*tor*s but otherwise normal female genitals. Others may have what appears to be a small but otherwise normal penis. Often, the testicl*s or ovotestis remain within the abdomen and do not descend into the scrotal sacs.

Do female cats want to mate? ›

Female cats 'queens' will signal that they are ready to mate or 'in heat' by becoming more active and quite noisy! Usually, she'll do lots of rubbing, rolling and attention-seeking behaviours. You will probably see her arch her back downwards with her hindquarters raised, which is called 'lordosis'.

How does male cat genitalia work? ›

The Male Genital Tract

In male cats, the genital tract provides a pathway for sem*n, which contains the sperm cells. The epididymis connects the testicl* to the ductus deferens, which carries ejacul*ted sperm to the urethra. Sperm mature and are stored in the epididymis.

Why does my female cat keep licking her private area? ›

In the cat world, a moderate degree of licking is part of normal grooming behavior. For example, a male or female cat may lick the genital area after urinating as a means of cleaning the area.

Why does my female cat keep sticking her bum out? ›

If you have not altered your female kitty, this behavior could be a sign she is in heat. Female cats in heat will often raise their butt when they are ready to go on the prowl for a mate. If your cat is not spayed, you should not let her out of the house during this time unless you want a litter of kittens.

How can you tell if a cat is intersex? ›

The signs and symptoms of gonadal or reproductive sexual development disorders may include having an unusually large cl*tor*s, for the female, or having an undescended testicl*, for the male. Other unusual reproductive organ characteristics may also be present.

Do hermaphrodites have balls? ›

The gonads in a true hermaphrodite are asymmetrical having both ovarian and testicular differentiation on either side separately or combined as an ovotestis. In an ovotestis, the testis is always central and ovary polar in location [1].

Can a cat have both female and male parts? ›

A tiny kitten handed into Cats Protection turned out to be one of nature's rarest finds – a hermaphrodite puss with both male and female organs. Nine-week-old Bellini was part of a litter of kittens taken in by the charity's St Helen's Adoption Centre in Merseyside in February when they were just a few days old.

Why do female cats cry after mating? ›

Why do cats scream when they mate? Cats scream when they mate because of painful scratching from a male cat's barbed reproductive organs. Male cats may also yell in response to the female cat's noises.

What happens if you don't let a female cat mate? ›

Female cats are induced ovulators, which means that ovulation does not take place without mating or similar stimulation. If the female cat does not mate during estrus, hormonal levels will eventually drop off, and the estrous cycle will repeat itself in another two to three weeks.

How do I know if my female cat has mated? ›

How will I know if my cat has mated with another cat?
  1. sudden stop in calling and signs she's in heat.
  2. weight gain.
  3. increased appetite.
  4. vomiting.
  5. swollen nipples.

Can cats hump without balls? ›

Cat humping isn't uncommon, even for neutered male cats. They'll hump other cats (and even inanimate objects) because of UTIs, stress, or other health and behavioral reasons.

Why do male cats bite female mating? ›

From Male to Female

The bite is not a faint one, either, and is performed with sufficient tenacity to allow the brief mating process to take place without the possibility of the female turning on the male or running away.

How do male cats penetrate? ›

Cats and Mating: How it Happens

First the male bites the female's neck, mounts her and positions himself on top of her. He then thrusts his pelvis into her and finally penetrates her, which usually only lasts about 4 seconds.

Why does my cat sniff my private area? ›

This sniff can help a cat determine if this will be a friendly encounter… or not. Cats use their sense of smell to help them understand and assess their environment so much so that it makes sense for them to seek the same information from humans with the same butt or crotch sniff… even if we hate it.

How do I clean my cats private area? ›

Accumulated urine and other debris can cause irritation and even infection of the skin or genitals. Wiping gently with a warm, damp cloth daily or when you notice debris can keep things tidy from nose to tail.

Why is my female cat rubbing all over me? ›

Not only is rubbing against you a sign of a happy “hello” or “welcome home,” but cats also want to make sure that they have marked you with their scent. Cats are territorial creatures and will claim their pet parents as part of their territory.

How do I know if my cat needs glands expressed? ›

Signs that you may need to express the glands manually include redness in the area and the cat scooting around or licking excessively. 2 Do not express your cat's anal glands without first consulting with your veterinarian. Problems such as anal gland infections and tumors require additional treatment.

How do you check if a cat has worms? ›

Common signs of worms in cats include:
  1. Vomiting (sometimes with worms in the vomit)
  2. Diarrhea (with or without blood)
  3. Tarry feces.
  4. Weight loss.
  5. Distended abdomen.
  6. Skin lesions.
  7. Generally poor body condition and a dull coat.

Why is my cat squatting but not peeing female? ›

Possibly the most common causes for this problem in cats are urinary tract infections and urinary obstructions. However, infrequent urination can also sometimes be caused by more serious conditions like kidney disease, idiopathic cystitis, and even cancer in some extreme cases.

What is an XXY cat? ›

In rare cases, cats can have an extra X chromosome making them XXY. These cats present as male, but can be Calico because they have two X chromosomes. This XXY configuration can cause Klinefelter's Syndrome, which is a health issue we'll get into later.

What is a Pseudohermaphrodite? ›

A pseudohermaphrodite is a person whose gonads are consistent with the chromosomal sex but who has external genitalia of the opposite sex. Male pseudohermaphrodites have normal testes but incomplete masculinization of the wolffian duct system and external genitalia.

Can cats tell if humans are male or female? ›

Yes. They can smell the hormones/pheromones.

Has a hermaphrodite ever had a baby with themselves? ›

Abstract. Background: There are 11 reported cases of pregnancy in true hermaphrodites, but none with advanced genetic testing. All known fetuses have been male. Case: A true hermaphrodite with a spontaneous pregnancy prenatally known to have a remaining portion of a right ovotestis, delivered a male neonate.

What is a pseudo female? ›

Hermaphroditism refers to a discrepancy between the morphology of the gonads and that of the external genitalia. In female pseudohermaphroditism, the genotype is female (XX) and the gonads are ovaries, but the external genitalia are virilized. [

Can a hermaphrodite have both working parts? ›

Can a hermaphrodite have both working parts? Yes, hermaphrodites have both working parts -- the male and female reproductive systems. However, only simultaneous hermaphrodites can have both reproductive systems at the same time.

How many male cats can impregnate a female? ›

Yes, female cats can get pregnant by multiple partners. In fact, the number of fathers isn't limited to just two males. Queens can have as many partners as there are kittens. For example, if your cat has 3 kittens, each kitten could have a different father.

Can cats be born genderless? ›

Hermaphrodite felines are rare but do occur, but there is no known documented case of a cat with no genitals. Fiona Brockbank, the senior field veterinary officer at Cats Protection, told The Telegraph: “It was an incidental finding. Nobody was aware of it.

How rare is a chimera cat? ›

How common are chimera cats? While chimerism among animals is exceedingly rare, among cats, "chimeras are really not all that rare", explained Leslie Lyons, a professor at the University of California, Davis. In fact, Lyons explains that most male tortoiseshell cats are probably chimeras.

How long are cats stuck together when they mate? ›

Since the female is less sensitive to environmental changes when in heat, she is brought to the tom for breeding. Once the cats get together, the mating process doesn't last very long – only about half of a minute to about 4 minutes.

Do male cats scream when mating? ›

We now know that cats scream during mating because the male's spiked reproductive organs cause pain for the female. Males will occasionally respond with their shouts in response to this. Also, it's vital to know that cats ‌have love bites as a display of power.

How long does cat mating last? ›

Cats take one to two minutes to mate. Thus they can repeat the process multiple times within a short period. A queen may mate with different tomcats during the heat cycle to make it possible that a litter of kittens may have different fathers.

How many times do cats mate in a day? ›

Most females require three to four matings within a 24-hour period for ovulation to occur. It only takes a minute or two for cats to mate, and cats may mate multiple times in a short period of time.

Is it cruel to let your cat have kittens? ›

Simply, the answer is no! As well as being prepared for the textbook scenario resulting in a bunch of healthy kittens, you need to also be prepared for things going wrong. You may encounter hurdles before birth, during birth or after birth. And this can be a very costly and worrying process.

Why do female cats try to mate with each other? ›

While in heat, their strong, natural mating instinct will cause them to try to mate with any and every cat of the opposite sex nearby – the cat in heat does not obey any rules about how humans think they 'should' behave! Get your cats spayed and neutered to avoid unwanted cat pregnancies.

Do female cats stay in heat after mating? ›

How long does a cat stay in heat after mating? If your queen is mated during her estrus cycle, the signs of heat will usually subside within 24-48 hours.

Do cats go out of heat when they mate? ›

These cycles will continue to repeat until the cat either becomes pregnant or is spayed. If your cat mates, they'll go out of oestrus within a day or two.

Does a father cat know his kittens? ›

In most cases, yes, fathers cats do care about their kittens. While female cats will typically do most of the activities related to caring for the young, such as nursing and grooming, a father cat can also show affection and protectiveness for his offspring.

Why do cats hump while kneading? ›

It is normal for cats to hump their pet parents because it's a way to gain their attention. Your cat might also hump you while kneading, or “making biscuits” to show their affection for you. While it's cute they want to show you they love you, this display of affection is often unwanted.

Why does my neutered cat hump his sister? ›

Humping Behavior in Neutered Male Cats

However, both males and females can demonstrate humping, even if they have been neutered or spayed. Humping isn't necessarily something to worry about, as it is a natural behavior. However, it can also be a sign that your kitty is bored, stressed, or frustrated.

Do neutered male cats still respond to females in heat? ›

Even after being neutered, the male may become stimulated enough to try to mount a nearby female cat in heat due to her scent. A neutered male can even display mounting behavior toward a spayed female.

Does mating feel good for male cats? ›

a) Dogs and cats are not like people when it comes to sex. They don't cycle the same way and there's no evidence, behaviorally or otherwise, that sexual activity brings them any specific pleasure akin to org*sm, for example.

Can a male cat penetrate another male cat? ›

It's no surprise that like nearly all animals, yes, male cats (toms) have been observed mounting and even penetrating one other.

What time of year is mating season for cats? ›

Cats are seasonal breeders and only enter their reproductive cycle at a certain time of year. This generally begins in spring as daylight starts to lengthen, and stops in late Autumn when daylight is reduced. This explains why litters of kittens are typically seen between April and September.

How do cats feel after mating? ›

After mating the female will seem very agitated and will roll and thrash around. This is normal behaviour. The whole mating process can take between 30 seconds to 4 minutes. A female can mate up to 30 times during one estrous cycle.

Where do male cats like to be touched? ›

Head, Shoulders, Cheeks and Nose

The head, chin and neck are often their favorites. While some cats enjoy having their tails touched, others will recoil and even experience pain from a tail stroke.

Do all male cats squirt? ›

A: The vast majority of cats do not spray. Males are more likely than females to spray, but if a cat is neutered before 6 months, he will almost never spray. If an intact male cat does begin to spray, neutering him will solve the problem in about 95 percent of the cases.

What does a cat prolapse look like? ›

It looks like a red or pink tubular structure sticking out of the area from which your pet normally poops. It can also be crusty, ooze, or be a dark color if it has been around for a while. Rectal prolapse is not the same thing as hemorrhoids, which are swollen veins from the rectum that bulge out of the anus.

What is the fat pouch on a female cat? ›

The primordial pouch, or belly flap, is a long stretch of skin that runs the length of your cat's tummy, but it most pronounced towards the rear. Instead of being closely attached to the muscle like the rest of your cat's skin, this flap is loose and naturally only has a thin layer of fat.

What is the hanging belly on a female cat? ›

Cats are born with this sagging belly, and all cats, both male and female, have primordial pouches. Some pouches are more prominent than others. Even non-domestic big cats have them! The pouch is an abdominal flap along their belly made up of extra loose skin and some fatty tissue.

What does uterine prolapse look like in a cat? ›

While some cases of uterine prolapse may not be externally visible, most cats suffering from the issue will develop a “doughnut” shaped protrusion in the vagin*l area. This protrusion is often very unclean, with fecal matter, hair or after-birth tissue stuck to it.

What can be mistaken for prolapse? ›

The most common disorders that pelvic organ prolapse is mistakenly diagnosed as include urinary and fecal incontinence, constipation, and irritable bowel disease.

What is a female cat perineal hernia? ›

A perineal hernia is a condition seen in dogs and cats in which the pelvic diaphragm becomes weakened. This results in displacement of pelvic and abdominal organs (rectum, prostate, bladder, or fat) into the region surrounding the anus. The cause of this condition is not completely understood.

What is a FUPA? ›

The acronym FUPA stands for “fatty upper pubic area.” In some instances, FUPA can both cause physical problems and negatively impact your self-esteem. If this is a real problem for you, then there are surgical and psychological treatments that can help.

Why do cats bunny kick? ›

Your furry friend will wrap their front two legs around the intended target (say, for instance, your arm) and, like a little thumper, will kick at the target with their hind legs. Cats typically perform this bunny-kick move when engaging in aggressive play or when they're attacking their prey (i.e., your arm).

Why do cats like their belly rubbed? ›

If your cat loves it when you rub her belly, take it as a compliment. It means that your cat wants attention and trusts you enough to touch her belly. Remember your cat's belly is the most vulnerable spot on her body.

What is stud tail in female cats? ›

Overactivity of the glands at the base of the tail is often known as 'stud tail' and can produce a similar appearance in this region. Although stud tail is seen most commonly in entire males (where testosterone presumably influences its development), it can occasionally be seen in neutered males and in females.

What is a hair ball in a cat's stomach? ›

While most of the swallowed hair eventually passes through the animal's digestive tract and gets excreted intact in the feces, some of it remains in the stomach and gradually accumulates into a damp clump — the hairball. It's not uncommon, says Dr. Goldstein, for a cat to regurgitate a hairball once every week or two.

What is the pouch on a cats lower stomach? ›

Primordial pouch, also called the cat belly pooch, is excess skin and fat that hangs low on the rear part of a cat's abdomen. This flap develops during adulthood and is more evident in certain breeds. This isn't really a condition, rather just a normal part of their body.

What is pyometra uterus cats? ›

Pyometra occurs in older, intact female cats that have undergone multiple heat cycles without getting pregnant. It occurs when hormone changes make the uterus more susceptible to bacterial infections. Following these chronic changes, bacteria travels into the uterus from the vulva and replicates, forming pus.

What are the signs of stump pyometra in cats? ›

Clinical signs may include any of the following: foul smelling vagin*l discharge, loss of appetite, fever, lethargy, weight loss, vomiting and diarrhea, or excessive thirst and urination.

What does a cat placenta look like? ›

The placentas in cats are red-brown in colour and usually come out after each kitten. If there are fewer placentas than there are kittens, there is a chance that the placenta was retained, and a vet needs to be contacted immediately.

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