I agree with adam completely. Thor is currently 27 in long, 305 grams and eats 2 adult mice every 5 days (for the past 3 feedings). I see that is just fine. And after he eats them both I don't actually see a bump.....he just looks fatter. He went into shed on a day before his feeding day this week, so he is missing a meal(first time in 5 months). I might offer 3 just to see what happens since he has not had a meal since last Monday.