There are several common types of intestinal parasites in the United States, including: While specific symptoms can vary based on the type of parasite, people who are infected typically notice ...

Parasites are organisms that live “on or within the blood, tissues or intestines of a host” and can be either external, think ticks, lice or mites, or human intestinal, according to UCLA Health.

Intestinal worms, also known as intestinal parasites, are a common problem for dogs and dog parents. They can come from a variety of sources and wreak havoc on your dog's gastrointestinal tract.