Later on, as the puppy matures, it is a very good idea to put the puppy on a heartworm preventive medication
that is also effective in treating hookworms, roundworms and other types of worms.
Just so you'll know, infected puppies shed roundworm and hookworm larvae continuously in their feces. Later on, if they happen to dig or play around in the same area where they pooped previously, they will reinfect themselves. It is good to know that roundworms and hookworms can be treated easily enough with a good quality dewormer.
If your puppy or dog lives in an area where exposure to various kinds of worms is very high it is a good idea to deworm your dog or puppy every three to six months throughout it's life just because. Also, it is important if your dog eats poop from ANY kind of any animal that it should also be treated for hookworms, roundworms and tapeworms as often as every three months.
There are many other kinds of worms that your dog may become infected with such as whip worms and the like. To be sure exactly what kind of worm infestation your pet has, you will need to take you dog (or a stool sample from it) to the veterinarian for a fecal exam.
If you have a puppy or dog and have not wormed it in some time please consult your veterinarian for more information about deworming your dog or perhaps follow the suggested worming schedule listed above. As always, please contact your veterinarian with any questions that you may have concerning deworming your dog.