I have a feb 08 male BP at 815g

His happy home is a 20 g long with the following:
2 hides
uth controlled by thermostat
large water dish
newspaper substrate
cool side 82- warm side 91
humidity 52

He eats live rats every 5-7 days. Has always fed succesfully on a mixture of asf or white rat (just depends on what the store has).

It has been 8 weeks since he has accepted food. He usually resides in the warm hide, coming out to explore at night time. For the past month and a 1/2 he has been staying in the cool hide exclusively and not coming out at night....except maybe a peeking head.

He does not have any physicaly abnormalities, clear eyes, nostrils and mouth, normal body (no buldges) and clear breathing. He does not have any signs of being close to a shed (it's the ONLY other time I've noticed him to solely prefer the cool side).

So...cool preference + no eating + no exploration at night = ???

Please help Thanks