I'm glad to be reading this thread. I've been a bit questioning about my ball's weight. He grows like a weed. He is 1 now and about 800 grams, he's been gaining like crazy. He gets a small rat each week, but it's to the point that I am considering moving up to mediums pretty soon becuase the small rats don't even seem to make a lump in his belly any more! He chows his rat down and cruises around, looking for more. Before he'd eat and then go curl up and hide for a few days to digest. I was wondering if he was growing too fast or if I was feeding too much, so I'm glad to see that isn't the case.