Giardia are single-celled organisms, infectious to many types of animals (including humans) all over the world. Their presence in the host intestine can cause diarrhea, though some hosts are symptom-free carriers.

Learn about the most common intestinal parasites in dogs and cats—like roundworms, hookworms, and giardia—how they spread, symptoms to watch for, and how to protect your pet and family.

From Feline Leukemia to Rabies, learn about the top 6 feline diseases, how they spread, what symptoms to watch for, and how you can protect your cat with testing and vaccines.