I've had my little python for about 2 months now, it's taken 4 fuzzy mice no problem, but still hasn't gone to the bathroom. He's housed in a sterelite tub, zoo med uth w/thermostat, keeps good constant temps, and about 56% humidity all the time. He's always really active when handled, and seems fine, so is it normal for them to go a long time without pooping? it's also still a juvenile, only about 18-20in long. thanks!