Well I have a female boa I picked up about a month ago (still have to post pics- probably will within the next few hours), and she's three years old and almost 7ft.. But I think she would have been quite a bit bigger (and that she will be) if she had been in my care since birth.. The guy that had her before only fed her every 2-3 weeks, and I feed weekly to ensure she doesnt look at me like Im food everytime I go to change the water or take her out lol.