I haven't had my snake for very long (barely over a week) but I have yet to find any poop in his tank. He ate fine, no hesitation at all, but still a week later... no poop anywhere that I could see. He's very small, maybe it was so small I didn't see it? How big is their poop normally? He's still being fed pinkies. Do snakes get constipated? What are some signs I should watch for?