Ball python
Ball Python Breeding Guide
From choosing breeders to hatch day.
How ball pythons are bred, from readiness and genetics to incubation and hatchlings, checked against published studies, veterinary references and experienced breeders. Every chapter ends with its sources, and anything that is our own habit rather than a sourced rule is marked our practice (what we do now) or our plan (how we have set up the rest).
Disclaimer: I'm not a veterinarian and I don't hold a degree in animal science or animal care. This is a guide I compiled and use for my own ball pythons. For a sick or egg-bound snake, a reptile vet is the authority.
- 01Start here
Who this guide is for, what breeding really costs, how to read the sources, and the breeding year on one page.
- 02Choosing breeders
How big and how old, health tests and quarantine before anything is bred, proven animals, and records from day one.
- 03Genetics
Recessive, incomplete dominant and dominant genes, possible hets, proving a het, genes that share a slot, lines that don't mix, and what calculators leave out.
- 04Genes to avoid
The morph genes linked to wobble, deformed faces, kinks, eye problems and poor fertility, what the evidence actually says, and why we keep them out.
- 05Conditioning
Getting females and males into breeding shape, the risks of overfeeding, the cooling question, and when a snake should sit a season out.
- 06Follicles
Reading a female's cycle by ultrasound and by hand: equipment, technique, follicle sizes, growth rates, and follicles that stall.
- 07Introductions and locks
When to put the male in, how long to leave him, rotating one male between several females, and what science says about sperm storage and multiple sires.
- 08Ovulation to laying
Spotting ovulation, the pre-lay shed, caring for a gravid female, the laying box, and the signs of egg-binding that need a vet.
- 09Eggs and incubation
Clutch size, slugs, why eggs aren't turned, mother or incubator, choosing an incubator, temperature, humidity, candling, dents and mold.
- 10Hatching and hatchlings
Pipping, the egg-cutting debate, the yolk, setting up hatchlings, first sheds and meals, problem feeders, sexing, and what to do about a baby with a defect.
- 11After the season
Bringing the female back into condition, selling hatchlings responsibly, shipping rules, the legal basics, and closing out the year's records.
- 12Glossary
Plain-English meanings of the breeding words used in this guide, from het to pip.
- 13Sources and credits
The main references behind this guide, how far we trust each kind, and where the evidence is thin.
Last revised October 31, 2026.