I've noticed on quite a few of the pinkies (frozen) that I cut up, that they have a large (compared to their body size) white organ of some sort inside of them. Is this normal/healthy/ok? I haven't noticed it on every single one, but I can't say that the pinkies are cut up in the exact same way every time, so maybe I missed it sometimes. I'm just hoping this doesn't mean they were sick or unhealthy, and if it's bad for my snakes to eat them.