My guinea pig has these small brown specks in her fur and I'm not sure if they are mites or just little specks of dirt? There are a lot of them towards her back end of her back.:... Is she going to be okay? If these aren't mites what are they? I noticed them last night when I was cleaning her fur. I am extremely worried about her and would like quick news. If they are mites can they spread to me and my furniture? Thanks ahead to all who help.