How might my dog get intestinal parasites?

Intestinal parasites can be passed inside the womb of the female dog onto her puppies. In other words, they can be transmitted before they're even born, or in the course of being born, or puppies can also get them just from the environment. An adult dog can pick up parasites by, say, walking through a dog park, then licking their foot, and ingesting an egg. And then, they will have the parasites.

Most dogs pick up intestinal parasites from either other dogs, the environment, or they might have them from their mothers.

Dogs can get intestinal parasites through fecal-oral transmission, meaning that they ingest feces, or they can pick it up from licking their paws where they've walked through contaminated areas, or by eating fleas.