Hi everyone. My two chi's lick their legs and paws a lot. The white chi,a long hair, has nasty brown stains on her bottom legs and all 4 paws. The shorthair has staining too, but it is far less noticeable because she is dark colored. This is nothing new, but I was wondering if other owners noticed this. They do it mostly when they lie down and relax. I think they do this to self comfort themselves before going to sleep. I wonder if there is anything I can do for the staining, besides washing it? Food?