This was brought up on the forum before and I wish Will and Brock would chime in on this. I really do not think it is a normal condition. It is somewhat common in captive collareds. I would be willing to bet it is caused from something we are not giving them in captivity or they are getting too much of something they are not supposed to. Will......... Brock........
Please correct me if I am wrong but I thought that is what you guys said a while back. Tom

Would never even THINK of doing that.
So If I have a fat lizard it is not from eating mice, heheheheh

LOL *SMILE*