This question is about youth, development, and ageing of the Au Ra!

Are they born with horns, or do they grow in at a certain age? If the latter, are young considered vulnerable until they grow in? How long would it take them to grow?
Are babies and children more scaly, less scaly, or the same as their adult counterparts? Does an individual's scale pattern change as they age and grow?
For those individuals that have them, are they born with bright limbic rings, or do those appear later? Do they fade with age, like real-life human limbic rings can? Do bright limbic rings impact on their sight in any way?
At what age does their stark sexual dimorphism become apparent? Are there any outliers in this dicotomy (i.e. remarkably small "male" Au Ra, or remarkably large "female" Au Ra)?