Marfan Syndrome is where bones grow too much, which could cause something to be much larger than normal.

I believe it'd be a good edition for lions. If they have Marfan Syndrome, they'd be slightly larger than an average lion, males and females. Cubs could be larger than normal cubs, adolescents near the size of an adult, and adults could be quite big.

It would not be lethal, and could have an effect in battle. Like the size could scare the enemy, like roaring can freeze them up.

However, they'd be slower due to their size. It only makes sense. :) if you do not support, please state why!

Goal: 100 Supports

EDIT: I had someone mention a few more effects. They could also be slower than usual when they get older as well. So this could be a bit lethal since the effects aren't all good, and there's really only one. But with a lioness their chances would also be lower with catching prey since they'd be slower and bigger, easy for prey to spot.

EDIT 2: They may not be larger, actually. Someone pointed out it makes animals skinnier usually, which would make sense. So this could cancel out "EDIT 1" as it talks of being "larger" but not taller. It could also have an effect on the looks of eyes and the mouth as those are also symptoms.