Trying to find out how old my male yellowbelly is. He was advertised as an adult at the pet store, but the didn't say exactly how old. We got him at Christmas. As of this evening, he is about 31" - 32" long and weighs around 380 grams. He's been on small rats for 2 weeks now and seems to take them fine. Just trying to get a better understanding of how old he really is. Thanks.