My sweet black rex Juliet has a slight problem. She has slightly crusty eyes. It looks like the kind of eye boogers a human would get in the morning but it's not normal for her. I plan on lightly removing the crust with a damp cloth, but what could this be? She is kept in a huge crate intended for great danes, feed good purnina rabbit chow, allowed clean water at all times and her crate is kept very clean. She didn't catch it from any other rabbits, she is kept alone for now, and our Holland Lop has no sign of sickness. She isn't actimng different just has the eye boogies. Thanks in advance!:rabbithop