I've searched a lot of threads about our BPs not eating during the winter, but I need a little reassurance.

My BP is about one year old now, had his since January of '08. As of November he was around 700g, ate one big meal about every 7-10 days. He's never refused a meal, ever. But the last time he ate was November 13 and I'm starting to get worried. I continue to offer once a week, he knows the rat is in there, but is not interested at all.

Warm side 89-90F cool side 80F. Ambient 75-78F Humidity 50%

No significant behavior change, drinking, active when I take him out, not so much in his tank.

Is it just that time when aliens take over our snake's brains?