Hi everyone. I am wondering if there is anything I can do about Bonnie's brown staining from saliva? She licks her feet a lot. Not to the point of any irritation, but enough so the front paws and back ones too are deep brown, to light brown with this staining. She does NOT have any eye staining, or not enough to notice. This brown staining can be cleaned off to an extent, and sometimes it comes out. No thining of the hair. I have to pull it out, which doesn't seem to bother her. I have her on a 4-5 star food, which doesn't seem to make much difference. I have just added coconut oil back into the diet. I have had he on a grain free diet, but switched all the dogs to a 5 star food with grain. She is a white longhair with a few beige spots. Any ideas would be appreciated.