I don't know if this is already in game or not, but I just had a little idea.

Seeing as a leopon would, in general, be kinda genetically screwed up, I think it'd be pretty likely that they'd produce mutated cubs- even if not other leopons.

Due to the screwed genetics they've got from hybridization, I think muties produced from them would be a lot more common than in normal lions.

So... my idea is that, basically, leopon breedings have high mutation chance- as well as higher rare/lethal mutation chance, too, though lower than normal mutes of course. It makes sense, really.

In general I don't think this would hurt to mutation market too much- seeing as leopons themselves are extremely rare.