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  • This handout provides information on Feline Immunodeficiency Virus (FIV) in cats. Included is information on how the disease is transmitted, the clinical signs, the recommendations for isolation of the infected cats, and potential treatment guidelines should your cat be infected with this virus.

  • Feline infectious peritonitis (FIP) is a complex disease caused by a virus that triggers an abnormal immune system response. Once ingested, it infects the intestine and may cause vomiting and diarrhea. It occurs worldwide in cats of all ages, but is most common in young cats, less than two years of age.

  • Feline infectious peritonitis (FIP) is a disease caused by a mutated strain of feline coronavirus that targets organs and tissues like the liver, spleen, and lymph nodes, resulting in a variety of clinical signs. The best way to diagnose FIP in a living cat is through histopathology (the microscopic evaluation of tissue samples).

  • Feline leukemia virus (FeLV) is a virus that infects cats and depresses the immune system, making infected cats more prone to infections, anemia, and certain cancers. It is usually transmitted by direct contact between cats through close contact activities (mating, mutual grooming, sharing litter trays and food bowls). There is no cure, but a vaccine is available.

  • Feline leukemia virus (FeLV) is a virus that infects cats. FeLV depresses the immune system and cats tend to remain infected for life. There is no cure for FeLV, and the disease is fatal, so preventing FeLV through vaccination is highly recommended.

  • Feline panleukopenia (FPL), also sometimes called feline distemper, is a serious viral illness in cats caused by the feline panleukopenia virus (FPLV). Outlined in this handout is transmission, clinical signs, treatment, and prognosis of cats with FPL.

  • Feline upper respiratory infection (URI) is one term for a respiratory infection caused by one or more viral or bacterial agents. Synonyms for this condition include feline infectious respiratory disease and feline upper respiratory disease complex (URD).

  • A femoral head ostectomy (FHO) is a surgical procedure that removes the head and neck of the femur (the long leg bone or thighbone) to help restore pain-free mobility to a diseased or damaged hip. This procedure is commonly recommended for cats, especially those who are at a healthy weight.

  • Fenbendazole (brand names Panacur®, Safe-Guard®) is a medication used to treat a variety of parasites in dogs. Its use in cats for the treatment of parasites is off label or extra label. Fenbendazole comes as oral granules or as a liquid suspension and is given by mouth. At regular doses, fenbendazole does not usually cause any side effects. Fenbendazole should not be used in puppies younger than six weeks of age or in sick animals.

  • Fentanyl is an opioid medication used off-label to treat pain in cats and dogs. It is often given as an injection in hospital, but patches may be prescribed to deliver fentanyl transdermally (through the skin) for pets at home. This handout describes common side effects, risk factors, and drug interactions. If a negative reaction occurs, please call your veterinary office.