Well here is something that concerns me... I've heard that an average 5 month old BP would be somewhere around 500 Grams. I've had my since June, and I think he's a yearling because he's about 2, nearing 3 feet. However he's only 280 grams. I am feeding him what everyone has told me I should be feeding him, but he's not too heavy. I've had him for about four months, so I know that he's most definitely at least like 8 months old (that'd be the youngest I'd say that he is) because I've held, and seen hatchlings, young BPs, and adults. He seems to be in the sub adult area.