I have had it warm for several days and he improved and returned to normal... Then Ieft him out again in the living room in a cold day and he started to behave similar again... The problem is that after I have had it several hours next to the heater, he is very warm but still breathes heavily. I really hope its some kind of cold and nothing else...
I put a link of the video, you can see that movement with this head and his stomach, I think its heavy breathing. Tho at least he doenst have his eyes closed this time...
https://drive.google.com/open?id=0B2...RKeV9GVEJBOTdV