Snakes grow all their lives, although much, much slower after they mature. I figure it's basically reached it's full size at 5 years old. Feeding time is all according to how the snakes acting. I have 2 full grown Hog Island Boas that I feed every 3 to 4 weeks depending on their actions, observation is the key. I have 2 juvy BCI's that i feed every 5 to 7 days depending on their actions. Attention to detail. Yes, boas are much different then Balls.