I have seen the problems first hand. So I am in no way "ASSuming". I have seen rabbits, rats, and other small animals come in with red bumps and half thir fur missing because of scratching so much from the pine. I have also seen snakes of many species come in with scales rubbed off their body because they had dumped their bowl of water onto the pine causing it to make the irritation so bad they rubbed against their hides and such so hard they actually rubbed scales off. Assuming would mean I was guessing and had no knowledge or experience. Because I am educated and have the knowledge and experience I would be giving an educated opinion not an assumption.