Deworming Schedule for Puppies and Dogs :
Puppies need to be wormed at 2, 4, 6, 8, 10 and 12 weeks of age, then every month until 6 months of age and then every 3 months for life.
Common Intestinal Worms:
Roundworms: Roundworms resemble a piece of string. They are round-shaped. These worms can grow to be as long as six inches. You can sometimes see them in the rectum or in the feces