I have two female viper boas that i currently believe to be gravid one that I have has not eaten in 6 months yet she gets increasingly larger and sticks to a warmer spot than the other boas. My second i have seen courtship between her and a very large male as well as she is in the hottest possible place in the tank right on top of the heat mat she has started to refuse food for the last 4 months and also is gaining some size but less noticable. i would like to post some pics but i have no idea how so any one who knows how that would be awesome