Versions of Clean Breeding

Clean Breeding is an umbrella term for several different playstyles on LioDen.

The Styles
There are 4 distinct clean breeding styles on LioDen. Although all of them are fairly different, all of them value No Heritage lions as the pinnacle of clean breeding. No heritage

No Inbreeding
The No Inbreeding playstyle is exactly what you think: When you look through the lion's heritage, it should have 0 instances of inbreeding within it. If a lion does not at least follow the no inbreeding stipulation of clean breeding, it does not meet the qualifications for most types of clean breeding and is considered a Dirty Blooded lion by the majority of clean players. For many players, this includes far, far back into the lineage.

Hard Mode
One of the older versions of Clean Breeding before it had a proper name. Hard Mode breeding was founded by Cerrates. It has a focus on lions with very, very short lineages. Incest IS allowed in Hard Mode. According to Cerrates, Hard Mode isn't strictly a clean playstyle, but there is enough interaction with the clean community and the effect of the style resembles clean breeding enough that it could still count.
 * See Main Article Here
 * Low Generation or Low Gen is a possible variation or offshoot of Hard Mode. It also has a preference for lions with short generations.

CLFL Clean Breeding
A more recently and arguably the most popular and common type of clean breeding, CLFL Clean Breeding (often just called Clean Breeding) focuses on breeding lions who not have The Big 4 in their lineages. Those four lions are: Boombah, HOT HOT TATER TOT, Keyser Soze, and The SAVANAH PRINCE. This includes far, far back in the lineage! This playstyle, while preferring no incest, does not require that a lion not be a product of incest.
 * See Main Article Here

Clean Breeding was founded by Jaxter.

Clean Breeding (No Incest/No Big 4)
This version of Clean Breeding, also commonly called clean breeding with no further specification, is an offshoot of CLFL clean breeding. It combines both the rules of CLFL and No Inbreeding to require that lions have neither the Big 4 or Inbreeding anywhere in their lineage. These lions may have other names like Pure Blooded, Perfectly Clean, Completely Clean, or Dual-Clean. It is unknown who founded this version of clean breeding, if anyone.