Please help if you can. I have had my rats for 2 months. Last night I played with them for 1.5 hours with no problems, and this morning I woke to find Olive with two drops of blood on her chin. I don't know what happened. I am suspecting MAYBE she tried to chew on some plastic or a dog bone treat that might have cut her mouth or chin. I have no idea!! They have had 0 health problems. Here are pics. What do I do?? **EDIT: I went and checked on her again JUST after posting. The blood is gone! Did she lick it off? It makes me so nervous that I wouldn't have seen it if I had woken up an hour later..