Giardia In Dogs

Understanding Giardia in Dogs: Causes, Symptoms, Treatment, and Prevention

Giardia is a microscopic parasite that can affect dogs, causing a gastrointestinal infection known as giardiasis. This post aims to provide pet parents with basic information about giardia in dogs, including its causes, symptoms, natural remedies, yard treatment, and preventive measures.

What is Giardia?

Giardia is a single-celled parasite that resides in the intestines of infected animals, including dogs. The parasite has a distinctive teardrop shape and can exist in two forms: cysts and trophozoites. Dogs typically contract giardia by ingesting cysts from contaminated water, food, or surfaces. But they can pick it up on their bodies or feet in the play yard and then ingest it through licking.

Transmission of Giardia

The most common mode of transmission for giardia in dogs is through the ingestion of cysts found in contaminated water sources, such as rivers, lakes, or puddles. Additionally, dogs can acquire giardia by consuming food or coming into contact with surfaces contaminated with the feces of infected animals. It is easily transmitted between puppies or dogs who live in the same environment. So you will want to separate them and see the notes below on keeping the yard clean.

Giardia is transmissible to humans too.

Symptoms of Giardiasis in Dogs

Common signs include diarrhea, vomiting, weight loss, lethargy, and a reluctance to eat. However, some dogs infected with giardia may remain asymptomatic carriers, shedding the cysts in their feces without displaying any clinical signs.

Veterinary Treatment for Giardia

If giardiasis is suspected, it is crucial to consult with a veterinarian for a definitive diagnosis and appropriate treatment. Veterinary treatments often involve prescription medications such as metronidazole or fenbendazole. It's essential to complete the full course of treatment, even if the dog's symptoms resolve before the medication is finished. Metronidazole may not be your best option as it doesn’t always work, and can sabotage good gut bacteria too. You have natural options to consider. Fenben is also a common anti-parasitic — but it often takes more than 1 round. Try natural!

Natural Remedies for Giardia in Dogs

While veterinary guidance is essential for treating giardia in dogs, some natural remedies may complement conventional treatments. Probiotics, such as yogurt or canine-specific probiotic supplements, can help restore the balance of gut bacteria if you are taking the above medications.

Essential Oils and Natural Antibiotic options will work effectively to support your dog through these conditions without doing more damage to their gut health in the way metronidazole would. Give natural a try first! I know it’s often a big leap of faith, but I’ll help you.

Yard Treatment for Giardia

To prevent the re-infection of dogs, it is crucial to address the environmental sources of giardia. Regularly clean and disinfect areas where dogs eliminate, removing feces promptly. Use a mixture of water and a pet-friendly disinfectant to clean surfaces, toys, and bedding. Avoid letting dogs drink from stagnant water sources and consider fencing off potentially contaminated areas.

Duration of Giardia in the Yard

The lifespan of giardia cysts in the environment varies depending on conditions. In cold and damp environments, cysts may survive forup to a few months, while in warmer and drier climates, they may perish more quickly.

Regular cleaning and disinfection of the yard can significantly reduce the risk of giardia transmission. Avoid Bleach and other harsh chemicals that further compromise your dog’s health. I highly recommend the use of Thieves Household Cleaner to spray down yards, kennel buildings, etc where multiple dogs are present. If you don’t resolve the issue in the yard, the cycle will just keep repeating itself through multiple dogs. (Don’t let the name fool you — Thieves is used in many veterinary practices as their cleaner — even in their surgical suites! I used to use it in my kennel building and play yards.)


Preventing Giardia in Dogs

Prevention is key to avoiding giardia infections in dogs. Implement the following measures to reduce the risk:

  1. Clean Water Supply: Provide clean and filtered water to prevent waterborne transmission.

  2. Hygiene Practices: Practice good hygiene by promptly cleaning up feces and disinfecting contaminated areas.

  3. Regular Veterinary Check-ups: Schedule regular check-ups with the veterinarian to monitor your dog's health.

  4. Avoid Contaminated Environments: Limit your dog's access to areas with standing water or where other animals may have defecated.

  5. Immune System Support: Giardia is present in parks, your neighborhood streets or maybe even outside your vet’s office. So keep your dog’s immune system strong since we can’t avoid all of these locations!


Giardia in dogs is a common gastrointestinal infection that requires prompt attention and appropriate treatment. By understanding the causes, symptoms, and preventive measures, pet parents can effectively manage and minimize the risk of giardiasis in their beloved furry companions. Always consult with a veterinarian for personalized advice and treatment plans tailored to your dog's specific needs.

Previous
Previous

Sulforaphane: A Canine Superfood for Holistic Health

Next
Next

Eye Care For Dogs