One of my boas always acts hungry but starts to go into FEED ME mode around 6 or 7 days or so after feeding. She starts to cruise around her enclosure a lot more and is very attentive anytime I'm in the room. By day 10 she is instantly up and looking around for food every time I walk in the room. I feed her every 10 - 12 days right now. She continues to grow with no issues even though she acts like she is starving. I haven't had the other boa long enough to be able to recognize any behavior patterns but I did feed him for the first time last night and he tore it up like a boss. I think I'm going to keep him on mice until the biggest mouse I can get is no longer big enough. I think the size rats he would need at this age are too full of milk and wont be as nutritious as older mice of the same size.