Girth is so much the issue as is length. My largest enclosure is 4ft by 3ft, so I am trying to keep snakes that are 8 foot or under. Also 8 foot was the limit imposed by my SO. I'm sure 9 foot wouldn't be too big of a deal, but I am trying to follow her direction to a t. Right now I have only Males, but I want a larger female. I am not sure what species. I am leaning towards a Boa, Woma, Ball, Dumeril, Blood, or ATB. If I can find a Dumeril, I will get that in a second. The others come in close second place. All the Dumerils I have found were adults, and right now I just don't have the room for my adult enclosures.