Kosmos is an incomplete dominant ball python gene first produced by RSReptiles (Ralf Simm) in 2012, prized for its distinctive, granite-like broken pattern.
History
The founding Kosmos animal was an African import whose unusual appearance was proven heritable by RSReptiles, establishing it as a stable, reproducible trait rather than a one-off anomaly.
How it's inherited
Kosmos is an incomplete dominant (co-dominant) gene: a single copy is enough to show the trait visually, following the same predictable inheritance pattern as other incomplete dominant genes like Pastel or Mojave.
What it looks like
Kosmos breaks up the normal alien-head pattern into a fragmented, pixelated, granite-like texture that runs from head to tail. The head is typically darker than a wild-type ball python's, often with a distinct orange patch just behind it and a striped neck. Expression can vary in intensity from animal to animal, but the broken, granite texture is the trait's signature feature. For terms like "alien head," see our pattern and color vocabulary guide.
Combos
Kosmos has been paired into a range of combos over the years, including Kosmos White Flame, and continues to show up in increasingly complex genetic stacks as more breeders work with the line.
Care
No documented health or neurological concerns are associated with this gene. Standard ball python husbandry applies.
See current Kosmos and Kosmos-combo ball pythons at diabloexoticpythons.com.
