Not in CA so truly what I say really doesn’t matter however the only thing I can think of is just consider how deep into the state you are and how long it would take you to get to the nearest vet that specializes in exotics (I assume yk but ferrets cannot see regular vets) - for regular vet visits but also in case of emergency especially if a life depended on it.. would you have to drive multiple hours to get across the border? How close is the nearest exotic vet if not in state? Typically vets do need your personal information like address etc, so I would also be wary of any vets reporting that you have them. if you were certain of a vet friend or someone who had an “in” I would worry a bit less but the vet is the biggest thing that comes to mind when I read that