A certain amount of inbreeding (which I guess is a more scientific term for it) does occur with leopard geckos for 2 reasons: people breed related animals to fix a particular genetic trait, and also because since nearly all the leopard geckos in a particular country probably derive from a limited number of specimen, many geckos are probably related to some degree. I think most breeders would agree that a limited amount of inbreeding is acceptable, but it's always important to avoid breeding within the immediate family for numerous generations, and to "outcross" periodically by breeding with more unrelated geckos.
This season I am breeding 2 geckos back to their father with no problems.
Aliza
