i have a chunky white female rat and 3 other rats but my issue is with my pew rat. she recently (as in noticed today) got red tears so i took her out by herself and gave her a huge look over. about 2 months ago she sprained her front foot and while that went on she cleaned it so much she lost all the fur on that leg. i just noticed she lost all the fur on her other leg too. do you think something is wrong? she loves to clean everything so i know she is doing this to herself and her cagemates aren't doing it to her. should i even be worried?