My chin is about 12 years old and he's been having "fits" where half his body seems paralyzed. I haven't seen it happen since he moved in with me (I just got an apartment that allows pets) but when he was staying with my mom it happened a few times. Is he sick? is it a neurological disease? Is it from stress? I just got back from Christmas and he was alone for a while. I thought it might have been the treats I gave him but he hasn't had those in a while I'm worried.