To Mike concerning Buttercup: There are several factors that may delay hair regrowth in ferrets following adrenalectomy. One would be continued hyperactivity of the remaining adrenal. A second reason may be the duration and severity of the presurgical hyperestrogenism. As excessive estrogen causes atrophy of hair follicles, the hair follicles may have taking a long time to return to full (hair-producing) function. It may also taken the stimulus of a change in season which normally causes the shedding cycle to begin to bring her back into line. Let's monitor her condition for a while prior to doing another surgery... To Red? concerning cedar chips - In many lab animal species - the aromatic nature of cedar chips can cause allergic reactions, eye, tearing, etc. The constant moisture on the face and irritation of the sinuses can then lead to other problems. I always advise to stay away from cedar chips - there are much better substitutes which are also much easier to clean when they are soiled.... Bruce Williams, DVM [log in to unmask] [Posted in FML issue 0669]