Lizard wants heat rock :C (or rather, a heated blanket I can use to pre-warm my bed before slipping into it! Can't/won't use it while I sleep no matter how safe it may be though, because I produce a LOT of body heat and would roast myself if I did. Hell, my body heat is the sole reason I have to sleep with the room as chilly as it is. 68+ F is all fine and good for a room temperature during the day, but at night I sweat so much under the covers if I don't have it below 65 F)