Ok, well I wanted some extra opinions on this. I live in sahaurita Arizona and I have two fairly large leopard tortoises that spend 90% of their time outside. I have built them a den, but obviously they prefer the other side of the yard, so when it's dark out they sleep under a bush or slightly in the open. That been said, what I wanted to know is if you guys think that it is still too cold for the leopard tortoises to stay outside through the night and full time now. Let me know what your thoughts are.