I think a premature birth mutation would be cool, and slightly make sense, like how in the real world all animals have a chance to give birth earlier then they should, thus a premature birth. The mutation would be lethal, and would have an extremely small chance of happening but could possibly happen from CRB, since CRB already increases chance of lethal mutations, who would say it wouldn't also increase the chances of a premature birth?

The premature cub would mostly likely die in 1 RO, but could also possibly go up to 3 RO's. I know some premature babies make into adult hood, But maybe making the mutation happen on the 1st day of being bred, so that it makes sense to be an lethal mutation as its way too early in development to survive.

I can't remember the user who said this in chat, but it was thought up when i said 'Why couldn't lions go into labour earlier?' while waiting for my felis to have her cubs

This is my first time ever posting a forum, topic or suggestion and Im not the greatest at wording things so apologies! If you have any other ideas for this please reply!

EDIT:
After taking a nap, and some thought, and a comment, Premature birth isn't a Mutation but i still feel like it would, if was in the game, be classed as a mutation if it happens really early. I did a tiny bit of googling around it, and if it doesn't make sense for a premature cub by itself, maybe if a cub is born prematurely then it comes along also gives it a birth defect?

Maybe this idea could have a whole new section? i know coding would be painful at some points, but i think something like this would be cool and in the game ^^

EDIT 2:
After more thinking, and rereading, this could not even be a mutation, just a rare occurrence that happens in the game, which has no in-game effect, but i personally think that having it has a mutation, so the cub/cubs is born to early which gives it a lethal mutation or, permeant condition (like no hunting, breeding ect..) to the lion. i also think if this were to occur, 1 cub litters would be required for this to happen, because you can't have 3 cubs born on say the first day of being conceived and only 1 cub being lethally mutated, and the rest are all normal, doesn't exactly make sense. (what i mean by first day of conceived, like when you breed it says '3 days till she gives birth' , i class the first day being when it says ' 2 days' sorry if this doesn't make sense, im not the greatest with words!)

i also know some players nest on the last day of the pregnancy, and i do too, but i think if this were to occur it wouldn't matter if you nested, like it already had a chance, nested or not, to loose the whole litter if the cub is born on the first day.

As another user said, we have things in game which aren't mutation, but still put under that section


Im open to ideas and positive criticism !
( sorry if some parts don't make sense, when i add a edit i do not think of what i previously written 3: )