Quote Originally Posted by olstyn View Post
My understanding has always been that it was more like 18 months before they get to full size, and that before that age and a weight of 50-60 grams, they should not be bred. At 10 months, my girl still had a lot of growing to do; I've never heard of a leo being done growing @ 10 months before.

On a separate note, I see the OP is using sand as a substrate. That's not recommended, especially for juveniles, as it can cause impactions, which can be fatal. Tile, slate, newspaper, paper towels, etc, are all better choices.
Your assumption is incorrect. Leos definitely reach sexual maturity within a year (10 months is a good average. Think puberty.) The 50-60 gram mark can often be hit (and surpassed) within that time as well.

But also, most leos stop growing around 13-14 months.

I have raised quite a few leos from hatchlings and this has been the trend.