Hey Maggie, I think you need a new tortoise for that great yard. I know you can never replace Bob but you can give another tortoise a great home. And I think everybody has to consider the size of their tortoise as an adult. That's why I did not get one of these big guys even though I totally fell in love with one as a hatchling and that is what got me interested in tortoises. I knew I could not provide what they would need as an adult.Kikwi, ...Bob was 25 pounds at 5 yrs and 115 at 17 yrs. And if I can do it right here's a picture of Bob's shed, it's 12'X20'. That small door on the side is his doggie door. It's insulated and heated to an ambient temp of 85 degrees with 2; 150 watt UVB basking bulbs, a sleeping box with a pig blanket in it. A solid cedar fence, a dug out pool and decent grass. If Bob was still there, the grass would not be like you see. So that's, IMO, the minimum a large Sulcata needs in the North, so he has room to pace while it's icing or well below freezing. Bob went out, loved the rain cold or not and would take a couple of laps in the snow. BUT, that's a large Sulcata not a small young one.