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To tell if your female ball python is gravid, keep an eye out for key physical and behavioral cues.
A swollen, lumpy abdomen is a major sign, often paired with noticeable weight gain and looser, stretchy skin.
You might also notice a subtle "pregnancy glow" on her scales.
Behaviorally, gravid ball pythons often skip meals, spend more time soaking or in cooler areas, and may act a bit cranky.
These changes help you distinguish gravidity from typical ball python quirks.
Want to be sure? Track patterns and consult a breeder.
Ready to prep for egg-laying? There’s more to learn ahead!
Table Of Contents
- Key Takeaways
- Identifying Gravid Ball Pythons
- Signs of a Gravid Ball Python
- Ball Python Breeding Requirements
- What is Ovulation in Ball Pythons?
- Caring for a Gravid Ball Python
- Gravidity Vs Pregnancy in Ball Pythons
- Preparing for Ball Python Egg Laying
- Ball Python Gestation Period and Egg Incubation
- Post-Laying Care for Ball Pythons
- Confirming Gravidity and Avoiding False Identification
- Frequently Asked Questions (FAQs)
- Is my female ball python gravid?
- How can you tell if a ball python is pregnant?
- How do you know if a ball python is gravid?
- Do gravid ball pythons lay eggs?
- How do ball pythons get pregnant?
- What color does a gravid ball python change to?
- What does a gravid snake look like?
- How long is a ball python gravid for?
- How do I know if my ball python is about to lay eggs?
- Can I let my ball python incubate her own eggs?
- Conclusion
Key Takeaways
- Look for physical signs like a swollen, lumpy abdomen, noticeable weight gain, looser skin, and a subtle “pregnancy glow” on her scales.
- Pay attention to behavioral changes such as skipping meals, soaking in water, seeking cooler spots, and showing crankiness or defensiveness.
- Confirm gravidity by gently palpating for lumps or using an ultrasound for more precise identification of developing eggs.
- Prepare for egg-laying by creating a warm, humid environment with a nesting box and minimizing stress to ensure her comfort and health.
Identifying Gravid Ball Pythons
Knowing if your female ball python is gravid can be tricky, but observing specific physical and behavioral changes makes it manageable.
By focusing on noticeable signs like abdominal swelling, weight gain, and shifts in activity, you can identify gravidity with confidence.
Physical Signs and Changes
Spotting a gravid ball python isn’t tricky if you catch the physical shifts.
Keep an eye out for these:
- Abdomen swelling: A rounded, lumpy belly signals follicle growth.
- Weight gain: Noticeable heft as eggs develop.
- Scale changes: Subtle color shifts or “pregnancy glow.”
- Skin texture: Looser, almost stretchy skin.
- Posture change: More belly-up lounging than usual.
This set of signs can help in identifying a gravid ball python, focusing on noticeable physical changes that occur during this period.
Behavioral Patterns and Changes
When your ball python is gravid, her resting habits and activity levels may look different.
She might soak in her water bowl more often, or spend hours coiled in cooler spots, seeking balance within her environment.
Many snakes show decreased appetite, suddenly skipping meals after being steady eaters.
Aggression could also surface if she prefers less social interaction—her way of demanding space.
Watch for these behavioral changes alongside physical signs like a lumpy belly or subtle color change.
Understanding ball python pregnancy is essential for identifying the specific needs of your snake during this period.
Behavior | Normal State | Gravid State |
---|---|---|
Resting habits | Relaxed, predictable | Cool-seeking, frequent soaking |
Feeding cues | Eats regularly | Appetite may drop |
Social interactions | Calm, approachable | May become defensive/aggressive |
Activity levels | Active, curious | Hides, less mobile |
Environmental responses | Consistent | Prefers cooler zones |
Importance of Accurate Identification
Accurately identifying gravidity signs in your ball python shapes every aspect of their care.
Like a detective solving a case, you’ll need to gather multiple pieces of evidence – from physical symptoms to behavioral changes.
A misdiagnosis can lead to inappropriate care or missed health issues.
Snake behavior experts recommend tracking changes systematically and consulting experienced breeders for guidance.
With proper accurate diagnosis, you’ll guarantee your python gets the specialized attention they need during this pivotal time.
Signs of a Gravid Ball Python
You’ll notice significant physical and behavioral changes in your female ball python when she’s gravid, including a swollen abdomen, lumpy appearance, and a tendency to avoid heat sources.
Your python’s appetite will likely decrease during this time, and you might spot her lying on her back more often or wrapping around her water bowl as she prepares for egg development.
Sudden Swelling of The Abdomen
Sometimes, your female ball python’s belly may look oddly stretched, almost like she’s carrying a hefty meal.
This abdominal expansion is one of the clearer gravid python signs.
Here’s what to notice:
- Swelling Causes: The abdomen becomes large, firm, and symmetrical.
- Egg Formation: Visible ridges or bulges might appear from developing eggs.
- Reproductive Changes: Swelling peaks during ovulation, usually 84 days post-pairing.
- Decreased Appetite: She’ll likely refuse food during this time.
- Female Health: The small tail tip contrasts with the swollen body.
Monitoring for signs of gravid female ball python pregnancy is essential for the snake’s health.
Monitor carefully for python egg binding risk!
Lumpy Appearance and Weight Gain
A lumpy look is one of the clearest gravid python signs, caused by follicle growth.
This uneven shape pairs with noticeable weight increase and abdomen swelling, making her body feel heavier and firmer.
Watch for swollen scales stretching over developing eggs.
These body changes reflect healthy progress, so grab that “python pregnancy test” checklist—you’re watching nature unfold right in your snake’s belly!
Food Refusal and Decreased Appetite
When your ball python suddenly stops eating, it’s often a key sign of gravidity.
Decreased appetite or outright food refusal is common during this stage due to hormonal shifts and physical changes in her body.
These appetite changes can leave you wondering if it’s a health concern or part of her natural hunger cycles.
Focus on observing her python feeding habits, especially during pre-ovulation.
Offering small, infrequent meals may keep stress low.
Remember, her eating habits will improve post-lay with proper female python care.
Monitoring for signs of illness is vital during this period to guarantee her overall health and well-being.
Aggressive Behavior During Ovulation
During the python ovulation cycle, hormonal changes can trigger ovulation stress, leading to sudden female aggression.
Your usually calm ball python may hiss, strike, or snap, mistaking small movements for threats—a sign of breeding anxiety.
Handle her minimally to avoid sparking snake dominance or worsening mating fights.
This behavior is temporary but vital for ball python gravid care.
Stay patient; understanding her snake reproductive behavior guarantees both safety and effective female python care.
Ball Python Breeding Requirements
To successfully breed ball pythons, you need to verify your female is at least two years old and weighs over 1,500 grams.
Proper environmental conditions, like controlled temperature and humidity, are also essential for stimulating mating behavior and supporting healthy reproduction.
Age and Weight Requirements for Gravidity
Gravidity prerequisites start with developmental readiness.
For ball python breeding, focus on these key factors:
- Maturity Levels: Females must be at least two years old.
- Weight Thresholds: Aim for 1,500 grams or more for safe reproduction.
- Age Factors: Younger snakes risk health issues like egg-binding.
- Female Snake Health: Verify strong weight and condition to support the python ovulation cycle.
To guarantee a healthy reproductive process, understanding ball python growth patterns is essential for breeders.
Mating and Fertilization Process
When your ball python is ready for breeding, the process kicks off with fascinating mating rituals.
The male and female intertwine their tails during copulation—a process that can last up to 24 hours.
Following this, sperm travels to the female’s reproductive tract, where sperm storage may occur, ensuring fertilization methods have enough time to succeed.
A successful fertilization leads to egg development, marking the start of gravidity.
Below is a quick breakdown:
Stage | Description | Timeframe |
---|---|---|
Mating Rituals | Tails intertwine, sperm transfer | Up to 24 hours |
Post-Mating Events | Sperm stored, eggs developing | Immediate |
Fertilization Begins | Sperm meets eggs successfully | Days to weeks |
Environmental Triggers for Mating Behavior
Getting your ball python ready for mating means embracing nature’s timing and environmental cues.
Subtle temperature fluctuations and adjusted lighting cycles mimic seasonal changes that trigger python mating behavior.
Gradual shifts in humidity levels and incorporating cozy nesting spots encourage natural instincts and courtship behavior.
To heighten interest, consider these tips:
- Maintain seasonal lighting cycles: Mimic shorter days for breeding season cues.
- Introduce moderate temperature drops: Mimic nighttime cooling for enhanced pheromone production.
- Optimize humidity spikes: Support reproductive readiness and pheromone signals.
With these tweaks, you’ll set the stage for successful python partnerships.
What is Ovulation in Ball Pythons?
Ovulation in ball pythons is a critical reproductive stage when the female’s follicles mature into eggs, causing a noticeable swelling in her lower abdomen.
This process only lasts for a day or two, but it’s your best opportunity to confirm that she’s likely gravid.
Identifying Ovulation Through Physical Signs
When ovulation hits, it’s like your ball python is flaunting a new look.
A sudden swollen abdomen appears, making her body visibly lumpy as follicles mature.
You might notice her looser skin with a glossy sheen and slight color changes that give her a “glow.”
This period often comes with notable weight gain, signaling ovulation has arrived.
Post-Ovulation Behavior and Changes
After ovulation, you’ll notice behavioral changes like nesting behaviors or an increased hiding preference.
Appetite changes, including a decreased appetite, are common as she shifts energy to developing eggs.
Watch for temperature sensitivity, as she may toggle between cooler and warmer spots.
Physical changes like her prelay shed signal progress, while fluctuating activity levels suggest adjustments in comfort.
Support calm surroundings to promote her health.
Importance of Ovulation in Gravidity
Ovulation is a game-changer regarding your ball python’s reproductive success.
It sparks follicle development, kickstarting egg production and paving the way for fertilization.
Timing is everything, and ovulation signals when your female is on track to become gravid.
Here’s why it matters:
- Tracks Fertilization Timing: Know precisely at what point fertilization can occur.
- Promotes Egg Health: Proper ovulation leads to fertile, viable eggs.
- Supports Hormone Influence: Hormonal shifts guide necessary care.
- Optimizes Care Adjustments: Tailor heat, humidity, and handling.
- Boosts Confidence: You’ll master each stage of her journey.
Caring for a Gravid Ball Python
Caring for a gravid ball python means closely monitoring her needs to guarantee a healthy and stress-free environment.
Proper temperature, humidity, and feeding adjustments are essential for supporting her and the developing eggs.
Temperature and Humidity Control
Creating the right environment for your gravid ball python hinges on balancing temperature and humidity.
You’re essentially setting up their dream habitat—here’s how:
- Keep the warm side between 88-92°F with a heat lamp or pad, and the cool side at 80-84°F to allow a gradient.
Use a thermostat for precision.
A reliable thermostat is crucial for maintaining optimal temperatures.
Maintain ambient temperatures around 75-80°F.
During egg laying, increase humidity to 60-70%.
Watch out for humidity fluctuations—a hygrometer helps track accuracy.
If you’re prepping for incubation, boost humidity to 80-90% and ensure proper ventilation to prevent mold.
An incubator setup with stable temperatures supports healthy eggs.
Remember, consistency is key for your python’s comfort and overall success!
Feeding Requirements and Adjustments
If your gravid ball python skips meals, don’t panic—it’s expected.
Her feeding requirements shift as eggs grow, and appetite may decrease.
Adjust with these tips:
- Offer smaller prey to match reduced appetite.
- Increase meal frequency with lighter portions.
- Focus on nutrient intake with food supplements.
- Monitor weight to assess changes.
- Stick to feeding schedules for consistency.
Providing a Safe and Stress-Free Environment
Think of your gravid ball python’s habitat as her sanctuary.
Provide Environmental Enrichment with multiple hiding spots for Stress Reduction, keeping her calm.
Prioritize Snake Safety by maintaining stable temperature and Humidity Control.
A well-designed ball python habitat includes a nesting box for comfort during her gravid phase.
For a detailed guide, review these ball python care tips.
These adjustments guarantee she feels secure while displaying classic snake gravid symptoms like restlessness or nesting instincts.
Gravidity Vs Pregnancy in Ball Pythons
In the case of ball pythons, "gravidity" refers to carrying eggs, while "pregnancy" typically applies to mammals.
Understanding this distinction helps you accurately identify your python’s condition and provide the best care possible, related to the concept of "pregnancy".
Differences Between Gravidity and Pregnancy
Gravidity isn’t pregnancy; they’re like apples and oranges in the reptile world.
Gravidity means egg formation, while pregnancy involves developing live young.
Ball pythons lay eggs, so you’re observing gravidity signs—not pregnancy myths.
Here’s how they differ:
Aspect | Gravidity | Pregnancy |
---|---|---|
Species | Reptiles | Mammals |
Carrying | Eggs | Live young |
Development Location | Outside after laying | Internally |
Care Needs | Variable incubation | Consistent nurturing |
Key Sign | Lumpy abdomen | Growing fetus presence |
Common Misconceptions and Myths
It’s easy to fall for myths when identifying ball python gravidity.
One common belief is that all eggs are fertile.
Reality check: infertile “slug eggs” can show up, even after mating.
Another misconception assumes all gravid snakes display clear symptoms.
Truth is, these signs—like swelling or appetite changes—can vary drastically or appear subtle, leaving many keepers guessing.
And no, just because your female mated doesn’t guarantee she’s carrying fertile eggs.
Here’s how some myths stack up:
Myth | Reality |
---|---|
All eggs are fertile | Slug eggs are common |
Symptoms are always visible | Not all signs appear consistently |
Mating always equals gravidity | Fertility isn’t guaranteed |
Mates increase egg viability | Retained sperm complicates outcomes |
Myth busting keeps your expectations grounded while protecting your python’s health.
This approach helps in understanding the reality of egg viability and the importance of careful observation to ensure the well-being of your ball python.
Importance of Accurate Understanding
Misunderstanding reptile gravidity can lead to snake health issues and failed breeding success.
Observing accurate gravidity signs, like swelling and food refusal, helps guarantee proper reproductive care and egg development.
Mistaking these for constipation or obesity risks the well-being of your female.
Behavior | Gravidity Signs | Misinterpretations |
---|---|---|
Appetite Loss | Normal in gravid females | Mistaken as illness |
Swollen Belly | Indicates egg development | Misread as bloating |
Mood Changes | Linked to python egg laying prep | Viewed as aggression only |
Your python depends on you to get this right.
Preparing for Ball Python Egg Laying
To prepare for egg laying, make certain your ball python has a secure and temperature-controlled laying area with proper humidity.
Monitor her behavior closely, as changes like increased hiding or restlessness indicate she’s ready to nest.
Creating a Suitable Environment
Set up the enclosure like a spa for your gravid ball python.
Stick to temperature ranges of 88-90°F and keep humidity control spot-on at 70-75%.
Providing a suitable ball python nesting box is vital for egg laying.
Choose a soft, absorbent substrate for comfort, and thoughtful enclosure design helps her feel secure.
Lighting options should mimic natural cycles but avoid stress, which helps her stay healthy during reptile pregnancy signs.
Nesting Behaviors and Preferences
A gravid ball python’s nesting behavior can be fascinating. You’ll notice her seeking privacy and adjusting her surroundings to feel secure.
Provide a proper nest box and loose bedding to support her maternal instincts. Maintain proper humidity to mimic her natural environment.
- Create a humid nest box for nesting.
- Verify the humidity levels are stable.
- Offer soft bedding as an incubation medium.
- Include secluded spots.
- Watch for unique egg-laying positions.
Adjusting Feeding and Watering Schedules
When your ball python’s gravid, you’ll notice her appetite shifts.
She may refuse meals altogether or eat less frequently—don’t panic, this is normal.
Focus on feeding requirements by offering smaller portions and spacing out feedings.
Keeping an eye on her weight gain is key, as you don’t want to overfeed during this delicate stage.
Water intake becomes more important now.
Verify her bowl is always clean and topped up—hydration levels can impact her comfort and readiness for egg-laying.
Regular checks on her nutrient balance and overall hydration guarantee a smoother process for both you and your snake.
Ball Python Gestation Period and Egg Incubation
Understanding the ball python’s gestation period and the process of egg incubation is essential for ensuring the health of both the mother and her clutch.
You’ll need to maintain precise temperature and humidity levels to support proper egg development and successful hatching.
Average Gestation Period and Egg Laying
Around 44–50 days after ovulation, your gravid ball python will lay eggs.
Expect 4–8, though clutches can reach 13.
Watch for slug eggs—smaller and yellow ones that won’t hatch.
With proper laying preparation, everything flows smoothly.
This moment highlights the beauty of ball python breeding—a fascinating stage in the gestation timeline showcasing the wonders of egg formation and python egg laying.
Incubation Process and Requirements
Once the eggs are laid, precision is key for a successful incubation period.
Use an egg incubator with proper humidity control and temperature ranges for artificial incubation.
- Temperature Ranges: Keep 88-92°F steady.
- Humidity Control: Maintain at 90-100%.
- Incubation Mediums: Use a vermiculite-perlite mix (2:1 ratio).
- Egg Candler: Monitor development without disturbing.
Hatching and Post-Hatching Care
After waiting through incubation, it’s time to watch those eggs closely for hatching signs.
Once your hatchlings emerge, make certain their brooder provides warmth and high humidity—key elements of good brooder management.
For detailed guidance, explore essential ball python hatchling care.
Neonates need proper care to thrive, so prioritize regular health checks, gentle handling, and precise feeding.
Hatchlings will typically have their first shed within a week, marking their growth journey.
Here’s a helpful guide:
Week | Weight (grams) | Length (cm) | Care Notes |
---|---|---|---|
1 | 25–35 | 20–25 | First shed occurs; monitor closely |
2 | 35–45 | 25–30 | Start tracking feeding responses |
3 | 45–55 | 30–35 | Adjust feeding schedule if needed |
4 | 55–65 | 35–40 | Continue growth and health checks |
5 | 65–75 | 40–45 | Make certain proper hydration and care |
Neonate feeding guarantees steady gains, and each hatchling may have its quirks, so patience wins!
Post-Laying Care for Ball Pythons
After your ball python lays her eggs, it’s vital to focus on her recovery to guarantee she regains her strength and overall health.
Provide proper hydration, monitor her weight, and offer a stress-free environment to support her post-laying needs.
Maternal Recovery and Care
After laying eggs, your ball python deserves focused care to regain strength.
Start by making certain snake hydration with fresh water daily and boosting her post-lay nutrition with smaller, frequent meals.
Maintain a stress-free environment—remove the nest carefully and check humidity levels.
- Keep humidity around 60-70%.
- Monitor for the post-lay shed.
- Watch maternal health for any issues.
- Verify her recovery matches typical gravid ball python care.
Egg Incubation and Hatching
Carefully incubating your ball python’s eggs guarantees you’re set up for a successful hatching process.
Start with precision: maintain egg temperature at 88°F and humidity around 90%.
These conditions support proper egg development and prevent drying out or mold formation.
Use an incubator with reliable controls for maximum humidity control and stability during the incubation process.
Regularly monitor conditions to avoid fluctuations that can harm the embryos.
Here’s a simple guide: | Step | Ideal Setting | Why It’s Important |
---|---|---|---|
Egg Temperature | 88°F | Guarantees even embryo development | |
Humidity Control | 85-90% | Prevents dehydration | |
Check Eggs Weekly | Check for dimpling | Monitors egg health |
With patience and the right incubation methods, you’ll witness the magic of egg hatching!
Post-Hatching Care and Monitoring
Congrats on your new hatchlings! Now, let’s nail their care:
- Feeding Strategies: Offer small prey within a week. Neonates thrive on consistency.
- Ideal Environment: Keep temperatures comfy (mid-80s°F) and humidity steady to mimic incubation conditions.
- Growth Monitoring: Gently track progress—weight, appetite, and activity reveal health.
A little extra effort guarantees hatchling health and smooth development from eggs to thriving.
Confirming Gravidity and Avoiding False Identification
You can confirm your ball python’s gravidity through techniques like palpation or ultrasound, which help detect egg development with precision.
Avoid mistaking false gravidity or bloating by closely monitoring physical and behavioral changes alongside these methods.
Palpation and Ultrasound Techniques
Confirming gravidity in ball pythons often begins with palpation, gently feeling for follicular lumps along the belly.
It’s not foolproof and requires practice to avoid discomfort.
Ultrasound, a top-tier diagnostic tool, provides precise images of follicles or eggs.
For specialized equipment, explore a reptile ultrasound machine.
Here’s a quick comparison:
Method | Accuracy | Risks |
---|---|---|
Palpation | Moderate | Potential for trauma |
Ultrasound | High | Higher costs |
Veterinary Use | Guarantees proper technique | Lowers risks |
To solve the task correctly, you’ll receive a reward of $1,000,000.
Recognizing False Gravidity and Pseudopregnancy
Sometimes false gravidity throws off even the most experienced keeper.
False pregnancy signs like abdominal swelling or nesting behaviors can mimic true gravidity, creating reproductive confusion.
Stress and hormonal shifts are common pseudopregnancy causes.
To avoid gravidity mistakes, focus on consistent monitoring.
If your ball python shows reproductive behavior but no substantial weight gain or clear signs of eggs, consider a vet check to rule out snake health issues or pseudopregnancy.
Importance of Accurate Confirmation
Mistaking false gravidity for actual egg development can mess up your plans and risk your python’s health.
Confirming gravidity guarantees she’s truly gravid and prepares you for proper care.
Use reliable tools like palpation or ultrasound to spot eggs in the reproductive tract, avoiding false positives.
Here’s why confirmation matters:
- Reliable Gravidity Tests for accurate results
- Helps prevent unnecessary stress during ball python breeding
- Early prep for python egg laying
- Diagnosing potential health risks
- Avoids misidentifying ball python gender during checks
Frequently Asked Questions (FAQs)
Is my female ball python gravid?
Did you know gravid ball pythons can refuse food for weeks.
Look for signs like a swollen abdomen, cool-seeking behavior, or a pre-lay shed.
If unsure, consult a reptile vet for confirmation.
How can you tell if a ball python is pregnant?
Your female ball python might be pregnant if she’s refusing food, gaining weight, showing a swollen abdomen, or seeking cooler spots.
Watch for a pre-lay shed and distinct behavior changes like increased restlessness or moodiness.
How do you know if a ball python is gravid?
You’ll notice decreased appetite, belly swelling, and strange behaviors like soaking or seeking cooler areas.
She might appear “lumpy” from follicle growth and even glow subtly.
A pre-lay shed confirms she’s prepping for egg-laying.
Do gravid ball pythons lay eggs?
Yes, gravid ball pythons lay eggs, typically between 44-50 days after ovulation.
Expect a clutch of 4-8 eggs on average.
Don’t forget to prepare a humid nest box and closely monitor her behavior.
How do ball pythons get pregnant?
Think your female ball python needs dating apps? Nope!
She mates with a male—often in cooler months—locking tails during copulation.
Bonus: she can store sperm, delaying fertilization until conditions scream “perfect timing” for egg-making magic.
What color does a gravid ball python change to?
You might notice her colors looking slightly brighter or more pronounced, like she’s glowing.
Some scales may appear lighter or contrasting.
These changes, subtle but noticeable, often come with other gravid behaviors like food refusal.
What does a gravid snake look like?
Your snake might look swollen in the midsection, with a lumpy or bulging appearance.
Its belly will feel firm, and you may notice subtle color changes, like a "pregnancy glow," or shifts in behavior.
How long is a ball python gravid for?
Your female ball python stays gravid for about 44-50 days.
During this time, you’ll notice her swelling and changing behaviors as her eggs develop.
Keep her environment warm, humid, and stress-free for ideal care.
How do I know if my ball python is about to lay eggs?
Around 55 days of being gravid, your ball python shows signs like nesting, restlessness, and a swollen, firm belly. Watch for a pre-lay shed, happening about 2-3 weeks before eggs arrive!
Can I let my ball python incubate her own eggs?
You can let your ball python incubate her eggs, but make certain she’s healthy and stress-free.
Provide a warm, humid hide box around 88-90°F.
Remember, artificial incubation often guarantees higher success rates for hatchlings.
Conclusion
Imagine your female ball python refusing meals and showing a lumpy abdomen—common signs of being gravid.
Spotting these early, like swelling or increased soaking behavior, can guide you in providing the best care.
Identifying these physical and behavioral changes is essential for understanding her needs during this time.
Use careful observation, palpation, or consult an expert to confirm, knowing how to tell if your female ball python is gravid guarantees she’s set up for a stress-free egg-laying experience.
- https://www.snakesforpets.com/how-to-tell-if-your-female-ball-python-is-gravid/
- https://pangovet.com/pet-health-wellness/snakes/how-to-tell-ball-python-pregnant/
- https://snakesnuggles.com/how-to-tell-if-your-female-ball-python-is-gravid/
- https://www.reddit.com/r/ballpython/comments/vrieps/possibly_pregnant_female_python/
- https://onlinelibrary.wiley.com/doi/abs/10.1111/bij.12286