Every now and then Hobbs will do this weird shaking thing where all of a sudden is whole body will shake/shiver and he won't want anyone to hold him and he'll get down on the floor and it will seem like he's stretching his stomach out. Sometimes he'll spin around in a circle and hold one of his legs up. It's so odd. It doesn't seem like a seizure or anything...it seems like he's uncomfortable. Lately it seems like it's becoming more frequent. Sometimes I'll take him outside and he'll go #2 and the shaking will subside. Other times, I'll take him outside and he won't go but the shaking will stop. I have a feeling it might be gas or something. Any ideas????