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Parasites + English

  • Harvest mites, also known as red bugs, trombiculid mites, scrub-itch mites, berry bugs or, in their larval stage as chiggers, are mites that are commonly found in forests and grasslands. Harvest mites are relatives of spiders. They are nearly microscopic measuring only 1/100 of an inch (0.4 mm) and have an orange hue. A common species of Harvest mite in Northern America is Trombicula alfreddugesi.  

  • Guinea pigs can be hardy and easy to care for when provided an appropriate environment for their unique needs. Like all animals, guinea pigs are susceptible to certain problems and diseases. This handout outlines the diagnosis, treatment, and prognosis for some of the more common health problems of guinea pigs.

  • Heartworms (Dirofilaria immitis) are blood-borne parasites that reside in the heart or nearby large blood vessels of infected animals. Recent studies of cats with heart and respiratory diseases have found an incidence of heartworms that is far greater than previously thought. Veterinarians now strongly recommend that all cats receive year-round monthly heartworm preventives. There are excellent heartworm preventives now available for cats, making prevention of heartworm disease safe and easy.

  • Heartworms are blood-borne parasites that reside in the heart or adjacent large blood vessels of infected animals. There is no drug approved for treating heartworms in cats and surgical removal is generally the best option. Veterinarians now strongly recommend that all cats receive year-round monthly heartworm preventative in areas where mosquitoes are active all year round. Cats that live in colder areas, where mosquitoes are seasonal, should be given monthly preventives for at least six months of the year.

  • Heartworm disease is a serious and potentially fatal disease. It is caused by a blood-borne parasite known as Dirofilaria immitis. Adult heartworms may live for five to seven years and, during this time, the female produces millions of offspring called microfilaria. You can prevent your dog from getting heartworms by using a heartworm preventive.

  • Heartworm disease is serious and potentially life-threatening to dogs. Treatment involves several components to combat potential bacterial infection, kill the heartworm larvae (microfilaria), kill the adult heartworms, and then test to confirm successful treatment. Complete rest for a dog undergoing treatment is essential. The prognosis for dogs after heartworm treatment is generally good if the pet owner follows all veterinary recommendations closely.

  • Common conditions of pet hedgehogs include internal and external parasites, ringworm, cancer, pneumonia, gastrointestinal disease, and obesity. Signs of illness or disease are often vague and non-specific, such as lack of appetite and lethargy. Therefore, any deviation from your hedgehog’s normal habits should be cause for concern and should be evaluated by your veterinarian.

  • Hedgehogs can have several unique problems, including cancer, dental disease, obesity, and foreign bodies. It is important for an owner to understand what these problems are so veterinary care can be provided to their hedgehog when needed and in a timely manner.

  • Hepatozoonosis in dogs is caused by ingestion of one of two organisms: H. americanum and H. canis. Both parasites are more common in the southern United States. The clinical sign and treatments for dogs with hepatozoonosis differ depending on the parasite species causing the infection. In either case, with appropriate treatment, the prognosis is generally good.

  • Hookworm is a parasitic infection of the gastrointestinal tract of cats. Their name is derived from the hook-like mouthparts they use to anchor themselves to the lining of the intestinal wall. How the infection is spread along with clinical signs, diagnosis, treatment, and prevention are covered in this handout.