
16/04/2025
Giardiasis in dogs and cats is a parasitic disease caused by the protozoan Giardia. This microscopic parasite is commonly found in water, contaminated food, or dirty surfaces, and infests the small intestine of our pets. Once inside, the parasites attach to the intestinal mucosa, causing a variety of gastrointestinal problems.
Infection occurs when animals ingest parasite cysts, which transform into trophozoites inside the intestine, reproducing and perpetuating the infectious cycle. Giardiasis affects animals of any age, although puppies and kittens, as well as animals with compromised immune systems, are more susceptible.
In many cases, infected animals are asymptomatic carriers, meaning they show no visible symptoms but can transmit the parasite to other animals and humans. Due to its zoonotic nature, giardiasis is a concern for both animal and public health, requiring proper management to prevent its spread. The symptoms, although similar, differ depending on whether it affects a dog or a cat.
- In dogs, symptoms include intermittent or persistent diarrhea, weight loss, vomiting, fatigue, and lethargy.
- In cats, symptoms include chronic or recurrent diarrhea, weight loss, abdominal pain, lack of appetite, and lethargy.
Treatment for giardiasis in dogs and cats focuses on eliminating the parasite and relieving symptoms. It is essential to follow your veterinarian's instructions and complete the treatment to ensure eradication of the parasite.