there are many problems that could arise from breeding too young and too small. you could stunt her growth, she could become eggbound which causes stress or death, and also it sometimes makes them so weak that they die after laying eggs, you also risk breeding her for nothing because the eggs might all be infertile.
A general rule for males is as soon as they want to and for females 3feet(36inches)and/or 300grams. 
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~~~Amy~~~
my zoo LOL
corns
1.0 caramel/amber het butter motley-Phoenix 1.0 sunglow motley-Eli 1.0 ghost-Alex(kinked) 0.1 charcoal-Siva 0.1 caramel het butter-Kilowea 0.1 snow het motley-Zhaneel 0.1 butter 50% het motley-Nanashi 0.1 butter 50% het motley-Mango
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1.0 hypo tang-Pablo 0.1 normal-Valentine
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