Giardiasis in Puppies

Giardiasis is a common cause of diarrhea in puppies and adult dogs. It occurs when a single-celled parasite called Giardia lamblia infects the small intestine. Transmission occurs by ingestion of cysts (eggs) from feces, contaminated soil or water sources, or via the fur or skin of infected animals. Puppies are at greater risk due to their immature gastrointestinal tract and may become dehydrated quickly if diarrhea is severe.

What is giardiasis?

Giardia is a parasite that can cause diarrhea in puppies and dogs. Giardia is a single-celled parasite that lives in the gastrointestinal tract of humans and animals, but it does not normally cause any health problems for them. However, when an infected animal defecates into an area that can be contaminated by other animals (such as on the ground or in yards), their feces may come into contact with others. This can spread the disease to others who have not yet been infected themselves.

Giardiasis affects both dogs and humans alike; however, it is more common among dogs than humans because they are more likely to ingest contaminated water or food sources during playtime outside than people are due to regular handwashing before eating/drinking after being outside all day long!

It is important to visit your veterinarian at the onset of symptoms to determine the cause of diarrhea and treat it appropriately.

Giardiasis is a common cause of diarrhea in puppies, causing them to experience frequent and watery stools. The virus can be transmitted to puppies through contaminated food, water or surfaces. In addition to vomiting and diarrhea, infected puppies may experience weight loss and dehydration.

It is important to visit your veterinarian at the onset of symptoms to determine the cause of diarrhea and treat it appropriately. If your puppy has been diagnosed with giardiasis, it is important that you practice good hygiene around your home so that other pets do not become infected as well.

Giardia can be detected in a fecal sample (stool sample) if present in the gastrointestinal tract.

A fecal sample (stool sample) is the most common way to test for giardia. However, a positive test result does not mean that there is an active infection present in your puppy’s body. This test may be negative if your puppy has recently been treated with antibiotics or if no giardia organisms have been present in his gastrointestinal tract.

Your veterinarian can give you instructions on how to collect and submit a stool sample as well as what type of container should be used for this purpose (a plastic sandwich bag will work). You should keep the fecal sample refrigerated or frozen until it arrives at the laboratory for testing by an experienced technician who can consistently recognize Giardia cysts under a microscope.

There are several treatments available for giardiasis which are prescribed by your veterinarian depending on the severity of infection.

Depending on the severity of your dog’s infection, your veterinarian may recommend a course of antibiotics. In most cases, a 10-day course will clear up giardiasis in puppies. Depending on the type of antibiotic prescribed, it can be given as a liquid or tablet that is usually administered for two weeks. However, it is possible to treat giardiasis with antibiotics alone without using non-antibiotic treatments like metronidazole or fenbendazole.

If you decide to use this method and your puppy does not respond well to it (for example: if his symptoms persist), then talk to your vet about adding another form of treatment such as metronidazole or fenbendazole into his regimen.

While there are some effective medications available for treating giardia in dogs, they do have side effects that need to be considered before administering them.

Very young puppies can be affected more severely than adults and should be seen by a veterinarian promptly if signs are observed.

Puppies are more likely to be affected by Giardia than adults. This stems from the fact that puppies have a higher risk of contracting giardiasis through their mother’s milk. Puppies who have not yet been weaned may also be infected through contaminated water or food, but this is less common than transmission through nursing.

It is important to note that puppies can be treated with antibiotics and will recover fully in most circumstances.

Giardiasis is contagious among animals and humans so proper isolation, disinfection and hygiene practices should be closely followed.

If you have a family member or friend with giardiasis, it’s important to remember that the disease is contagious among animals and humans. As such, proper isolation, disinfection and hygiene practices should be closely followed.

  • Wash hands with soap and water after handling pets.
  • Wash hands before eating or drinking anything; wash again after using the bathroom.
  • Change diapers regularly to prevent spreading infection through contaminated diapers in your home environment.
  • Sanitize trash cans with diluted bleach solution (1 teaspoon of bleach per gallon of water).


Giardiasis is a common cause of diarrhea in puppies and can be treated with a variety of medications. If your puppy is experiencing loose stools, contact your veterinarian promptly as this may be due to giardia or another condition requiring treatment. By following the steps outlined in this article, you will be able to ensure that your puppy has the best chance at a long and happy life.