He is a few months old and 139grams before today's feeding. I have had him for 2 and a half months and he has went from 80g to 139g. I bought a 50 pack of mice weanlings when I got him ranging from about 15 to 18 grams. I have been feeding him one about every 4 days since they are a little small for him. He will curl up in his hide for a few hours after eating but then he is normally back on the move.