Internal parasites (like round worms, hookworms, coccidia) are generally more common in young pets, but some adult animal’s especially senior animals, immune-suppressed patients, and outdoor cats are commonly affected if exposed. Some parasites (like giardia, tapeworms and whipworms are not age related). There is zoonotic (transmissible to people) concerns with some internal parasites (roundworms, hookworms, tapeworms, giardia)
There are several links in this website for more information on the importance of parasite prevention in animals, but for now try www.capcvet.org.
In December we encourage pet owners to submit their pet’s first or second fecal sample of the year for analysis, and pass on information about the importance of monitoring and treating internal parasites. We chose December because the ground is freezing up and snow covered which will help prevent the re-infestation by these internal parasites. So, it is sort of a time to clear the intestinal track of parasites and keep it clear for at least several months.