I can confirm to you that my Boa is very much healthy and has a great feeding response if he's hungry. If not hungry he will reject the rat. Husbandry is good. He is a BCI but he could have some BCC in him "cross". And even if that was true, i would say he is 80% BCI. I have developed a special feeding program for him which might not be suitable to recommend for everyone on an open forum like this. By the way, i have also a 4 years old male ball python and a 6 months old male Dumerils Boa. Both I feed live, and both reject food when not hungry.