I live in South Carolina and it gets very hot and humid down here. Sometimes we go weeks with the temp over 100. I am building Jessie her first pen and it is going to be 30' x 30' . I am going to build a little run in shelter ( like horses have ) maybe 6' x 4' and put a large doghouse in there but i think the dog house might get to hot. I was also thinking of sinking a rubber maid trash can in the ground and making a burrow but not sure about that. I would love to hear what others on here have done to keep your sullies from over heating. Thanks Jason