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Small Mammals + Infectious Diseases

  • COVID-19 is a viral respiratory disease of humans that was first discovered in late 2019. The illness is caused by the virus SARS-CoV-2, which is a new coronavirus that has not previously been identified in humans. Certain animals can be infected by the COVID-19 virus, but it appears to be infrequent. Dogs and cats seldom show severe clinical illness if infected with COVID-19.

  • Cheyletiellosis in rabbits is a condition caused by the common rabbit mite, Cheyletiella parasitovorax. This mite’s effects are sometimes called "walking dandruff" because they are large, whitish mites that crawl across the skin and hair of a rabbit and cause excessive flaky skin. Other clinical signs of cheyletiellosis include itching, scratching, and hair/fur loss. This species of mites can live in the environment for a short time and affect people and other animals, so it is important to follow your veterinarian's recommendations for treating the environment and all pets in the household.

  • COVID-19 is a disease caused by the coronavirus SARS-CoV-2. Current evidence suggests that person-to-person spread is the main source of infection. While there is evidence of transmission from humans to dogs and cats, it does not appear common. If you suspect that you are ill with COVID-19, you should take the same precautions with your pet as you would with people.

  • Encephalitozoonsis is a parasitic infection that can affect the kidneys, eyes, and nervous systems of rabbits. Many infected rabbits do not develop clinical signs until they are older or if they become stressed or immunocompromised. Common signs that may develop include heavy white plaques/growths inside one or both eyes, head tilt, eye twitching, and tremors or seizures. Treatments are available, though not all rabbits respond.

  • There are four major infectious diseases seen in pet rabbits: myxomatosis, rabbit hemorrhagic disease (RHD), encephalitozoonosis, and pasteurellosis. This handout discusses the causes, signs, and treatments for these diseases. Be sure to have your rabbit checked annually by a veterinarian to keep them as healthy as possible and minimize problems.

  • An insulinoma is a cancerous condition involving the beta cells of the pancreas. Beta cells are the cells that produce insulin. Clinical signs may include pawing at the mouth, weight loss, tremors, collapse, abnormal behavior, depression, lethargy, and confusion. Treatment can be medical, surgical, or both with proper dietary management.

  • Rabbit hemorrhagic disease virus (RHDV) is a fatal calicivirus that affects only rabbits. It can be transmitted by direct contact with a diseased rabbit or from feces, urine, or hair from a diseased or dead rabbit. There is no known treatment, but an American-made vaccine is available in the US. Europe has had a vaccine available for years.

  • Rabbit syphilis is a sexually transmitted disease caused by a spirochete organism called Treponema cuniculi. Infected rabbits will develop sores that are confined to the mucocutaneous junctions, such as the external genitals, anus, lips, nostrils, and eyelids. Treatment involves two to three weekly penicillin injections. Humans cannot contract this disease from rabbits.