Are Puppies Born With Worms? Vet-Verified Signs, Treatment & Prevention

Are Puppies Born With Worms? What Every New Puppy Parent Needs to Know

Bringing home a new puppy is an exciting time filled with adorable moments and the start of a lifelong bond. However, many new puppy owners are surprised to learn that their little bundle of joy was actually born with worms! In fact, it‘s extremely common for puppies to have worms early in life. But don‘t panic – with some basic knowledge and the guidance of your veterinarian, you can protect your puppy and get those pesky parasites under control.

In this ultimate guide, we‘ll cover everything you need to know about worms in puppies, including how they get them, signs to watch for, treatment and prevention strategies, and when you need to call the vet. By the end, you‘ll be armed with the information to keep your puppy healthy from snout to tail! Let‘s dive in.

Which Worms Commonly Infect Puppies?

There are several types of intestinal worms that frequently infect puppies:

Roundworms (Toxocara canis and Toxascaris leonina) – Spaghetti-like worms that live in the intestines. These are the most common type of worm in puppies.
Hookworms (Ancylostoma caninum and Uncinaria stenocephala) – Small, thin worms with hook-like mouths that attach to the intestinal wall and feed on blood.
Whipworms (Trichuris vulpis) – Thin, thread-like worms that live in the large intestine and cecum.
Tapeworms (Dipylidium caninum) – Long, flat, segmented worms that attach to the small intestine. Puppies usually get tapeworms by ingesting infected fleas.

All of these worms are considered zoonotic, meaning they can potentially infect humans too, especially young children. More on that later!

How Do Puppies Get Worms?

Many new puppy owners are shocked to discover that their puppy was actually born with worms. How can this be? It all starts with the mother dog.

If the mother dog has worms, the worm larvae can cross the placenta and infect the unborn puppies during pregnancy. Worms can also pass to the puppies through the mother‘s milk while nursing. Roundworm larvae are especially sneaky and can become encysted in the mother‘s muscle tissue, lying dormant until activated by pregnancy hormones.

Once born, puppies can pick up worms from a contaminated environment, by ingesting eggs or larvae in the soil or feces. Sniffing, licking, and eating dirt and poop is a normal part of puppy exploration and play, but it also puts them at risk for picking up worm eggs and larvae.

Puppies can also get worms by eating infected animals like rodents, birds, rabbits, or insects. Fleas serve as an intermediate host for tapeworms, so if your puppy accidentally eats a flea while grooming, it can become infected with tapeworms.

Signs Your Puppy Might Have Worms

It‘s not always obvious that a puppy has worms, as some can appear perfectly healthy. However, there are some telltale signs to watch for:

Pot-bellied or bloated appearance, particularly in the belly
Diarrhea or loose stools
Vomiting
Lethargy or low energy
Failure to gain weight and thrive
Dull coat
Coughing (a sign of roundworms)
Scooting or rubbing bottom on the ground
Visible worms in stool or vomit (tapeworm segments look like grains of rice)

Keep in mind that some of these signs can indicate other health issues besides worms. If you notice any of these symptoms in your puppy, it‘s best to consult with your veterinarian to get an accurate diagnosis and appropriate treatment plan.

Puppy Deworming Schedules

Because worms are so common in puppies, veterinarians recommend deworming them early and often. Most experts advise deworming puppies every 2 weeks starting at 2 weeks of age, and continuing until they are 12 weeks old.

Here‘s a typical recommended deworming schedule for puppies:

2 weeks old
4 weeks old
6 weeks old
8 weeks old
10 weeks old
12 weeks old

After 12 weeks, puppies should be put on a monthly preventative that protects against the major worms. Many heartworm preventatives also include ingredients to control roundworms, hookworms, and whipworms, so you can protect against multiple parasites with one monthly chewable or topical treatment.

Your vet will likely ask you to bring a fecal sample to your puppy‘s first checkup so they can test for worms under the microscope. This will help ensure your puppy is properly dewormed for the specific parasites detected. Fecal testing should be repeated one to four times during the first year of life.

Treatment for Worms

The good news is that worms are treatable! If worms are detected in your puppy, your vet will prescribe a deworming medication suited for the specific type of parasite. Common deworming drugs include:

Pyrantel pamoate (for roundworms and hookworms)
Fenbendazole (for roundworms, hookworms, whipworms, and tapeworms)
Praziquantel (for tapeworms)
Milbemycin oxime (for roundworms, hookworms, and whipworms)

Your vet will determine the best deworming medication and dosage schedule for your puppy based on their weight, age, and type of infection. Be sure to follow the instructions carefully and administer all prescribed doses to fully clear the worms.

Note that deworming medications only kill the adult worms, not the eggs. That‘s why it‘s so important to administer multiple rounds of treatment to eliminate any larvae that may have hatched. Most puppies will need at least 2-3 treatments to fully eradicate worms.

Preventing Worm Infections

An ounce of prevention is worth a pound of cure when it comes to protecting puppies from worms. Here are some strategies to minimize your puppy‘s risk of infection:

Deworm mother dogs before breeding and during pregnancy and nursing. This helps reduce transmission of worms to the puppies.
Keep your puppy‘s environment clean. Promptly dispose of feces and disinfect soiled areas. Use gloves when handling feces and wash your hands afterward.
Administer monthly heartworm preventative year-round that also controls intestinal parasites. Consult with your vet about when to start preventatives.
Prevent your puppy from eating feces, dirt, and dead animals or insects. Supervise your puppy outdoors and interrupt any attempts to ingest fecal material or scavenge animal carcasses.
Control fleas in the environment and on your puppy. Fleas can transmit tapeworms if swallowed while grooming.
Have your vet test fecal samples one to four times during your puppy‘s first year, even if they have no symptoms of worms. Some worm eggs are shed on an inconsistent basis.

Zoonotic Risk to Humans

Puppy worms aren‘t just a threat to your dog‘s health – they can also infect humans. Roundworms and hookworms are the biggest zoonotic risk, especially for children.

If a person accidentally ingests roundworm eggs, the larvae can migrate to various tissues in the body, including the eyes, brain, liver, and lungs. This condition is called visceral larva migrans. Hookworm larvae can penetrate bare skin and cause a condition called cutaneous larva migrans, characterized by itchy, red, winding tracks on the skin.

Thankfully, human infection is preventable with good hygiene practices. Always wash your hands after handling your puppy, their feces, or anything they‘ve touched. Teach children to do the same. Don‘t let kids play in areas that may be contaminated with dog feces. Cover outdoor sandboxes to prevent neighborhood pets from using them as litter boxes. And of course, keep your puppy on a regular deworming program as recommended by your veterinarian.

When to See the Vet

Any time you suspect your puppy has worms, it‘s best to consult with your veterinarian. They can confirm the diagnosis with a fecal test and prescribe the appropriate deworming treatment.

In particular, contact your vet right away if your puppy has:

Diarrhea or vomiting that lasts more than 24 hours
Lethargy or weakness
Loss of appetite
Visible worms in stool or vomit
A bloated or painful abdomen
Coughing or difficulty breathing

These symptoms could indicate a severe infestation that requires more intensive treatment. Your vet can also help you determine if your puppy‘s human family members should be tested or treated for exposure.

Final Thoughts

Discovering your new puppy has worms can certainly put a damper on an otherwise joyful experience. But worm infections in puppies are extremely common and usually no cause for panic.

Armed with knowledge and a plan, you can work with your veterinarian to get your puppy dewormed and protected against future infections. A combination of deworming early and often, keeping the environment clean, and using monthly preventatives will help your puppy thrive and enjoy a long, healthy life free of pesky parasites.

Remember, when it comes to your puppy‘s health, you are their greatest advocate. Stay vigilant, follow your vet‘s recommendations, and enjoy the precious puppy moments along the way!

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