Potter- my 5 year old black lab has chronic active hepatitis that is currently being controlled ok with medication - Zintinol. however over the last couple of months he has been loosing an insane amount of fur - i brush him daily and i get a lot of fur each brushing - our temperature has been up and down but i'm not sure if that is the issues because my other dog - with no health issues is not loosing very much at all. Is this a CAH issue or something else?