What temperature is the food? My Jungle Jag and Zebra are always stalking and will grab anything I put in front of them, but my Green Tree Python and Rainbow Boa like their stuff around real body temperature. I'll usually thaw the stuff out without much attention to temperature and present to each of my snakes. But if my GTP and Rainbow just sniff around it and give it some flicks of the tongue without taking it, I'll check the temp and then bring it up to high 90s (in a ziplock bag in warm water). They'll take it every time at "live temperature" after refusing just minutes earlier.