well I do have a digital scale, and I get a weight on him every month or so. He has grown pretty consistantly over the past 6 months and is now, like i said, 31 inches and 420 grams. He has never refused a meal and eats anything I throw at him. The reason I got a rat this past weekend was because all the feeder mice were hoppers, it would have taken like 5 to sufficiently feed him so the rat what my best bet. He seems to be doing fine, while a few of you say "hes gonna regurge" I don't think that's in his future. He has been in his hide and seems to be acting fine (poked his head out for some water, a look around, and back in the hide)