For those not familiar with hairball problems in ferrets. The accumulation of hair in the stoamch and throat can certainly cause your ferret to gag, choke or vomit. Unlike cats -- rarely will a ferret ever be able to expell a hairball or hair by vomiting. Please consider using a feline hairball remedy on a regular basis form your ferret, especially during coat shedding season. Alicia a shelter Mom [Posted in FML issue 1944]