can a ferret get worms? google it you'l find alot about sick ferrets on there,,,also a good trick is before you take him to the vets or instead,ring up the 24 hr vet and explain everything,and they should give you a rough idea as to what it might be,and only the cost of a phone call,,,as i agree vets are rip offs,,good luck mate,i hope he ,s ok, atb fts