I just want to clarify the use of Imrab in ferrets; there are several 'varieties' of the Imrab vaccine. All are intended to vaccinate against rabies. Three are listed on the 1997 compendium; Imrab 1, Imrab 1 Bovine and Imrab 3. Only Imrab 3 is approved for use in ferrets. The other two are not. If you go to a vet who treats mostly dogs and cats, you can tell them that the type of Imrab that provides 3 year immunity in dogs and cats is the one approved for ferrets. Annual vaccination is required for ferrets. Imrab 1, which provides 1 year immunity for dogs and cats is the one not approved for ferrets. But any vet should be able to figure this out by reading the current copy of the Compendium for Animal Rabies Control, published (among other places) in the first issue of the JAVMA every year. -Ilena Ayala [Posted in FML issue 2148]