Giardia in pets is a protozoan parasite that infects the gastrointestinal tract of humans, mammals, birds and even amphibians. The parasite can cause severe symptoms and is transmissible between animals and humans.

GIARDIA IN PETS EXISTS IN TWO FORMS DURING ITS LIFE CYCLE:

• The trophozoite form: has unique flagella-like whips, enabling them to move through the intestinal tract with ease.
• The cystic form: can survive several months in the environment, particularly in damp and wet conditions.

HOW IS GIARDIA IN PETS SPREAD?

Dogs become infected with Giardia after they ingest these cysts. These cysts are typically in contaminated water or grass. The cysts pass to the intestines and transform into the trophozoites. They then attach to the intestinal wall to feed. If there are significant numbers of the parasite then clinical signs of intestinal wall damage develop. These trophozoites reproduce and some transform into cysts. The dog eventually excretes the cysts in their faeces, completing the life cycle.

GIARDIA SYMPTOMS

It’s important to note that not all dogs show symptoms when infected with Giardia. Healthy adult dogs infected with Giardia will typically not have severe symptoms but may still shed cysts in their faeces. In younger, older or immunocompromised animals, symptoms may include:

• Diarrhoea – can be intermittent
• Foul-smelling faeces
• Watery, mucousy, green or blood-tinged faeces
• Vomiting (read more about this here)
• Lethargy
• Weight loss

DIAGNOSIS & TREATMENT

There are different tests available to help diagnose infection with Giardia. When you bring your pet to Pet Doctors we can advise you on the best one for your pet.

Treatment typically involves medication for 3-10 days. Some dogs may also require follow-up tests and repeat treatments.

PREVENTION

Keep your pet’s environment dry and clean of faeces to help prevent infection. You can do this by picking up dog poo immediately and always apply proper hygiene. Wash your hands or use gloves to help reduce transmission onto humans.

If your dog has tested positive to Giardia, speak to Pet Doctors about how to disinfect your dog’s environment to help prevent ongoing reinfection.

Find more helpful articles and Pet Doctors’ news on our Facebook and Instagram pages.