Our just over 1 year old cat had the rabies vaccine when she was neutered. We just got a notice that she's due for another shot ??? Is this necessary? I only want to give our cats what they have to get according to pet license requirements and nothing more, and of course rabies is on there. Is a booster or a second shot required too? It just says must be vaxed against rabies, no details. I don't want to ask my vet because he thinks all cats need all their shots every year.