What is the minimum breeding size of a human being?
See, there isn't a single answer. It DOES depend on age and also it DOES depend on health, sexual maturity, muscle tone, etc.
So, make sure your female king is healthy and sexually mature. If you have that at 36 inches then fine. If you have that at 40 inches then fine.
My opinion: wait until she is 2 1/2 years old.

