Parasitology is the study of parasites, the disease processes they cause, and the treatment of these diseases. Companion animals are susceptible to a large number of parasitic infections from both internal and external parasites. In Houston, three of the most common parasites we encounter are fleas, ticks, and heartworms. However, animals in our area are also commonly exposed to gastrointestinal parasites such as roundworms, hookworms, tapeworms, whipworms, and Giardia. Some of these parasites are zoonotic, meaning that humans can become infected with them. Prevention of parasitic infection is the goal at Memorial-610 Hospital for Animals, and we strive to educate our clients about the best prevention measures available. Through the use of Sentinel® Heartworm preventative and Parastar® Flea control products, an effective and economical prevention program may be utilized for your pet. Sentinel® allows owners to give monthly heartworm, intestinal parasite and flea control in one monthly dose.