I searched and couldn't find this, surprisingly. Only suggestions on ways to punish inbreeding.

Instead - could we get some sort of tool, perhaps at the Scrying Stone, to check heritages of a lion for inbreeding, and to check between two lions to see if they would cause inbreeding? It would be a simple tool where it would check the IDs of all lions submitted to see if there are any duplicates and call that back as "this lion has some inbreeding in its heritage" or "these two lions are related!".

This would be extremely helpful for those of us who want to have clean lines, but have to keep track of these things long term manually or do extensive research into genetic trees to check for inbreeding.