Your dog may be infected with roundworms from the time it is born because often the mother passes the worms to the puppy while it is still in her body. Roundworms can also develop in a puppy after it is born when the puppy eats larvated eggs from the environment or drinks worm larvae (young worms) in the mother's milk.
Is it normal for newborn puppies to have worms?
A: Not all puppies, but it is very common for puppies to have roundworms or hookworms, either passed in utero or through a mothers' milk. Because worm infection is so common, we normally deworm puppies just to be safe.
How do puppies get worms in the first place?
Transmission of intestinal worms (hookworms, roundworms, and whipworms) commonly occurs when your dog ingests contaminated soil or feces containing eggs or immature worms (larvae) that have been passed from other infected animals in the environment.
Do puppies get worms from their mother's milk?
Puppies can even be born with worms passed on by their mother or they can pick them up through their mother's milk during nursing. Other dogs can pass worms to pups too, and infected fleas can carry the tapeworm, which will infect a puppy if ingested.
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