when i brought home tenzing at only 4 weeks old, he was always cold. during the day he stayed in my pocket for warmth and during the night i put almost boiling water in tupperware, with a handtowel tucked around it and he slept all night on that. the water stayed hot all night and i kept it in the corner of a box so he wouldn't roll off. he stayed cold all his life and always slept with his head on my shoulder, under the covers. it went on that way until he died at 18 years, BUT, WHEN I TRIED TO PUT A SWEATER ON HIM, HE LAUGHED HIS BUTT OFF.