I have a a het pied that gives me a boob egg ( again this year actually 2 ) but i not found out any reason for it, since she eats rats like a kid would candy. Now i have found that ifi feed my rats a mixure of the mazuri and dog food they do better, but i do raise my own rats. ( I never planned on having more than a few snakes not the 16 + I got now lol) so the rat breeding has become more of a deal than before lol( gone from a single tank to having 4 tanks and a asf and mouse tank as well)