Marina - Zach sleeps with his belly exposed a lot lately. I think it's because it's summer time and he's warm and relaxed.

He had done it a lot more when I first took him in for fostering from the shelter. He and Calloway would be sleeping on the floor together all the time. After he was adopted and then returned, he seemed to be less "comfortable" for want of a better word, and would sleep curled up. I think when he sleeps with his belly up, and his little paws curled up, he feels more self assured and at home. That's just my take on him and the situation though.