Gastrointestinal (GI) parasites

“Gastro” refers to the stomach, “intestinal” refers to the small intestines (duodenum, jejunum, and ileum), and a “parasite” is any organism that lives on or within another living animal and uses it to survive. The most common GI parasites in dogs and cats are hookworms, roundworms, whipworms, coccidia, and Giardia (though there are others).