Either for myself or someone else that were sold as 99.999% positive females, or 100% females from well known reptile breeders and dealers. Shadow was sold as a definite female, but I knew he was male right away by looking at him (didnt matter to me at all, thats just what he was thought to be), and Zeus was thought to be a definite female where he came from and from his original owner, but I knew right away he was male also when he showed up. Both were 18 months to 2 years old when they showed up. Both absolute sweethearts and very friendly animals. He is a very very pretty albig, even with that old burn.