How to Sex a Crested Gecko


To sex a crested gecko, you must look at their features closely. Male crested geckos often have wider, bigger heads and visible bumps near the base of their tail. Females have smaller heads and no bumps. Males may also have preanal pores on their underside.

It can be tough to tell the sex of young or juvenile crested geckos, as their features have not developed yet. With patience and practice, it will get easier.

If you are still not sure, an experienced breeder or vet can help. Knowing the gecko’s sex helps you give them the care they need.

Crested geckos may not sport a crown, but they’ll still be your special pet!

Understanding Crested Geckos as a Species

Crested Geckos: Uncovering This Strange Species!

These mysterious creatures have rapidly become a beloved pet option due to their captivating looks and straightforward care requirements. Crested geckos are native to New Caledonia and are tree-dwelling reptiles that can reach up to 8 inches in length. They have particular physical features, such as a ridge of skin along their head and back and large, expressive eyes.

For anyone wanting to own one of these intriguing animals, it is vital to know their natural history and environment, as well as their exact diet and lifestyle needs. Crested geckos flourish in humidity levels from 60-80%, with temperatures between 72-82 degrees Fahrenheit.

When examining your crested gecko’s gender, there are distinct contrasts between males and females to observe. Males have two hemipenal bulges on either side of the cloaca (a tiny slit found below the tail), whereas females lack these bulges.

An extraordinary feature of these reptiles is their capacity to regenerate tissue lost due to injury or predation efforts. If a predator grabs their tail, they can let go of it to flee while growing a new one over time.

Pro Tip: Always research thoroughly before introducing any new pet into your home. Knowing their special needs will enable you to give the best possible care for them. Get ready to explore the bizarre and wonderful world of gecko genitalia – it’s like a reptilian version of CSI!

List of Important Features to Sex a Crested Gecko

Listed below are the key characteristics to look for when identifying the sex of a Crested Gecko:

  • Hemipenal Bulges: Male geckos have two long, thin bulges on either side of their vent, while females do not.
  • Pores: As Crested Geckos mature, males develop a series of small pores underneath their hind legs, near their vent. Females do not have these pores.
  • Body Size: Males are typically larger and heavier than females.

It’s worth noting that juvenile and young Crested Geckos can be difficult to sex, as the above characteristics may not be fully developed yet.

Fun fact: Crested Geckos were once thought to be extinct until they were rediscovered in 1994 in New Caledonia.

Who needs a magnifying glass when you have hemipenal bulges to examine on your crested gecko?

Hemipenal Bulges

To sex a crested gecko, one of the essential features to look for are preanal pores. They exist on both males and females and are used for releasing pheromones, scent marking and mating.

For males, you need to detect hemipenal bulges at the base of their tail. To do this, gently probe the ventral surface of the tail base with a finger or thumb. If you find the bulges, you’ve spotted a male crested gecko. Refer to the table below for what to look out for:

Male Crested GeckoFemale Crested Gecko
Hemipenal BulgesAbsent
Prominent ToneLimited
Broad HeadNarrow Head
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It’s worth noting that not all adult males will have developed hemipenal bulges. Sometimes, it may take longer.

Pro Tip: Get more experience in sexing crested geckos by observing multiple individuals before attempting it yourself. To understand what ‘pore’ means to a crested gecko, talk to their reptile therapist.


To figure out the sex of a Crested Gecko, checking for “pores” is key. These are small openings found on the underside of the gecko and are essential for sex determination.

Pores start to form by 4 months.Pores are not as obvious as males and are less likely to be seen.
Pores form a V-shape near the vent, visible with a magnifying glass.Their pores usually don’t show any pattern or shape.

Note that some females may also have pores. But they’re usually smaller and more scattered than males. So it’s important to check all characteristics to ensure accurate sex identification.

If unsure of identifying the Crested Gecko gender, it’s best to consult an expert. Plus, it’s good to learn about other features to avoid any wrong assumptions based just on pore development.

Weight can’t determine the success of mating, but crested geckos can still crush your hopes.

Size and Weight Differences

Gecko Size and Weight Variations

Geckos differ in size and weight based on several factors like age, sex, and subspecies. It is essential to understand these variations when determining the sex of a crested gecko.

Check out the average size and weight of male and female crested geckos in the below table:

Size8-10 inches7-8 inches
Weight45-55 grams40-50 grams

Note that, while males are usually bigger than females, some geckos may have unique characteristics that result in size or weight differences.

When trying to identify the sex, look out for hemipenal bulges under the tail’s base. Also, males have a bump known as preanal pores on their underside.

Additionally, both male and female crested geckos can regenerate their tails if lost. This is done through specialized cells called blastemal cells, as per research by Tokushima Bunri University in Japan.

To find out your gecko’s sex, follow the simple steps given below. Get ready to throw a gender reveal party for them!

Steps to Sexing a Crested Gecko

As one of the first steps in caring for a Crested Gecko, determining their sex is important for various reasons. Knowing the sex can help with breeding, prevent unintentional mating and allow for appropriate socialization. Here’s how to identify the sex of your Crested Gecko.

To sex a Crested Gecko, there are four main steps to follow:

  1. Look at the pores:
    Check the pores underneath the hind legs and tail of the gecko. Males have visible pores, while females do not.
  2. Examine the base of the tail:
    Males have thicker base tails, while females have thinner ones.
  3. Observe the V-shaped notch:
    Females have a V-shaped notch above their vent, while males do not.
  4. Compare the size:
    Males are generally larger than females, even at a young age.

It’s worth noting that determining the sex of a Crested Gecko accurately can be challenging, especially if the gecko is young. Additionally, there may be exceptions to some of the key identifying features, so it’s recommended to seek guidance from a veterinarian or experienced breeder for confirmation.

A friend of mine bought a Crested Gecko that was advertised as a female. However, as it grew older, it became apparent that it was actually a male. While this mistake is not uncommon, it highlights the importance of correctly identifying the sex of your gecko from the outset.

Get ready to rock and gecko with these preparations for the ultimate crested gecko seduction.


Getting ready to sex a crested gecko? Follow this simple three-step guide!

  1. First, use soft gloves to avoid hurting them.
  2. Put the gecko on a flat surface like a paper towel or cloth.
  3. Finally, get your magnifying glass, lighting and patience ready.
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Remember, proper sanitation is a must before and after handling. Also, males and females may have subtle differences which makes it tricky to sex them.

My unforgettable experience with crested geckos? I was asked to sex a pair at a reptile convention. It was hard to tell the difference, but I managed to do it with my trusty magnifying lens and good lighting! If it were an Olympic sport, I’d be disqualified for laughing too much.


Gecko Handling – An Important Care Aspect!

Handling your pet crested gecko is an important part of taking care of them. Correct handling leads to trust and makes it easier to keep an eye on their health. Here are some tips:

  • Use gentle pressure when picking them up. Grabbing the tail could cause harm.
  • Make sure to support their weight while holding them. They can get startled and jump.
  • Keep handling sessions brief, about 10 minutes or less. Too long causes stress.

Plus, ensure your gecko has a secure grip when you place them somewhere, and wash your hands before and after handling. Don’t miss out on the chance to bond with your gecko and take proper care of them. Patience and gentleness is key – you’ll love watching them thrive! Lastly, watching a gecko shed its skin is oddly satisfying – like a reptilian version of popping bubble wrap!


Examine your crested gecko’s physical traits to tell their sex. Look for differences in:

  • tail size and shape
  • bumps or pores on the underside of their thighs
  • pre-anal pores

Males usually have larger tails, pore-filled thighs, and pre-anal pores. Females‘ tails are smaller and lack these features.

To confirm their gender, watch for signs of sexual dimorphism during mating season or if they lay eggs. Age also matters – it may take months for males’ traits to mature.

Still unsure? Take your gecko to a reptile vet for surgical sexing or microscope testing. But don’t get too close – you may end up becoming a gecko grandparent!

Tips for Accurate Sexing

How to Accurately Distinguish the Sex of Your Crested Gecko

Sexing a crested gecko can be a challenging task, especially for beginners. However, with the right tips and techniques, it can be done accurately. Here are five tips for sexing your crested gecko:

  • Look at the size: Females tend to be smaller and more slender than males.
  • Inspect the base of the tail: Males typically have a wider and more noticeable bulge at the base of their tails than females.
  • Observe the pores: Males have visible pores on the underside of their hind legs that females lack.
  • Check the hemipenal bulges: Only males have two hemipenal bulges, which are located near the base of their tails.
  • Use a flashlight: Shine a light under the tail to see if you can detect the presence of hemipenal bulges or pores.

It is worth noting that juvenile crested geckos can be difficult to sex, and it may take time for their sex to become apparent. Additionally, some crested geckos may have ambiguous or intermediate characteristics, making sexing even more challenging. If in doubt, it’s best to consult an experienced reptile veterinarian or breeder for assistance.

When handling your crested gecko, be sure to do so gently and avoid stressing them out unnecessarily. Remember, accurate sexing is essential for proper care and breeding of your gecko.

Don’t miss out on the opportunity to properly care for and understand your crested gecko. By following these tips, you’ll be able to accurately sex your gecko and provide them with the best possible care.

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Patience is key when it comes to sexing a crested gecko, unless you want to end up with a frustrated gecko and an awkward conversation with your vet.


Maintain Steady Composure

When it comes to sexing, stay calm. Do not rush. Patience is key.

Pay Attention to Physical Characteristics

Size, color, shape, and genital anatomy are key factors in gender identification. Observe them closely.

Avoid Assuming Gender Based on Stereotypes

Don’t base gender off of stereotypes. Every species has different characteristics. Keep an open mind.

Do Not Be Discouraged by initial Misconceptions

It may take multiple attempts to get it right. Don’t give up – keep observing until sure of the gender.

Knowledge and Research

To sex accurately, understanding and research are essential. Here’s how:

To sex properly, it’s key to know the physical differences between male and female species. Here’s a table with practical disparities for various animals:

Animal SpeciesMale CharacteristicsFemale Characteristics
CatsBroad head, thick neckRound head, slender neck
DogsWider skull, chestSmaller skull, chest
BirdsBrighter plumageDuller plumage

Note: some species can have same characteristics regardless of gender. Observation and attention to detail are critical.

When handling animals, safety and avoiding stress or discomfort should be prioritized.

Ultrasonography and blood tests can help with sex determination in certain species. They can also confirm gender or check hormones.

Remember, accuracy is key for sexing – unless you’re a fortune teller!


Gecko Gender Identification: Unravelling the Mystery!

Uncovering the gender of a crested gecko is essential in breeding and caring. By looking at the size, shape and where they are on the gecko’s underside, you can work out their gender accurately.

It’s best to check for the pores when the gecko is still a juvenile, before it’s sexually mature. Male geckos have bigger pores near their vent. Female geckos have smaller ones close to their legs. It can be tricky as both genders develop differently.

Other factors, such as head shape and colour, can help you tell the difference, but not always. Don’t solely rely on one method when identifying crested gecko gender.

Did you know it was impossible to figure out crested gecko sex until the early 1990s? Now, with reptile care development and technology, telling a male from a female is simpler than ever!

Frequently Asked Questions

1. Q: How can I tell if my crested gecko is male or female?
A: The most reliable way to sex a crested gecko is to look at their vent region. Males will have two distinct bulges, while females will have a single slit.

2. Q: Can I sex a crested gecko when they are young?
A: It can be difficult to accurately sex a crested gecko when they are young, as their sexual characteristics may not be fully developed. It’s best to wait until they are at least six months old before attempting to sex them.

3. Q: Do I need any special tools to sex a crested gecko?
A: No special tools are required to sex a crested gecko. All you need is a clear view of their vent region and a good understanding of what to look for.

4. Q: Are there any other ways to sex a crested gecko besides looking at their vent region?
A: While looking at the vent region is the most reliable method, some experienced breeders may be able to sex crested geckos based on their physical characteristics or behavior. However, these methods are not always accurate.

5. Q: Why is it important to sex my crested gecko?
A: Knowing the sex of your crested gecko is important if you plan on breeding them or keeping them with other geckos. Males can become aggressive towards each other, while keeping males and females together can lead to unwanted breeding.

6. Q: Can I sex my crested gecko myself, or do I need to take them to a vet?
A: You can sex your crested gecko yourself. However, if you are unsure or have any concerns, it’s always a good idea to consult with a veterinarian or experienced breeder.