Snakes have a bad reputation. They trigger a revulsion in many people because of their slithery, tongue-darting ways. And, of course, the bad P-R from that Garden of Eden incident just won't go away.

How often is too often when it comes to your pet's vaccinations? It's a question more and more pet owners are asking these days. Mounting debate about the need to vaccinate animals annually, along with concerns about a possible link between vaccines and rare cancers, may leave many pet owners confused about how often to visit the vet for vaccinations.