Bluetongue is a viral disease that affects sheep and cattle, and there are many synonyms for it. One of these is epizootic hemorrhagic disease, a disease that causes hemorrhaging in animals. Another synonym is orbivirus, a type of virus that causes bluetongue. Some people may also refer to bluetongue as a fever, as it causes an increase in body temperature in the affected animals. Other synonyms include catarrhal fever, bovine mucosal disease, and sheep-enetic virus. No matter what it's called, it's important to identify and treat bluetongue quickly to limit the spread of the disease and prevent complications in animals.