Ita dai bluetongue tana nufin wata cuta mai saurin kamuwa da cuta da ke shafar dabbobi masu rarrafe, kamar tumaki, awaki, da shanu. Cutar ta samo asali ne daga kwayar cutar kwayar cutar Orbivirus, wacce ke yaduwa ta hanyar cizon tsakiyar nau'in Culicoides. Alamomin bluetongue na iya haɗawa da zazzabi, kumburin harshe da lebe, gurguwa, da damuwa na numfashi, kuma wani lokacin yana iya mutuwa. An ba wa cutar suna don yanayin launin shuɗi mai launin shuɗi wanda zai iya fitowa a harshe da kuma na baka na dabbobin da aka shafa.