Thank you so much for responding - the temp in her cage is stable year round, and she has gone into 'hibernation' several times since we have had her ( about 7yrs ). The people who gave her to us told us that she did that with them too. I guess I won't worry as long as the rest of the year she is healthy and active. She is a really cool snake, great personality, loves the attention from the kids etc. Again, thanks for your help