PRIMARY bronchiolo-alveolar adenocarcinoma is rare in domestic animals. It has been observed in cattle (Charan and others 1996), buffalo (Charan and Iyer 1978/79), dogs and cats (Walzi and Hunyady 1967, Stunzi and others 1974, Bostock and Owen 1975), but appears not to have been reported in camels. The following communication describes a spontaneously occurring primary bronchiolo-alveolar adenocarcinoma in a dromedary camel (Camelus dromedarius) in Saudi Arabia. During routine meat inspection of camels slaughtered at Al-Ahsa abattoir in the eastern region of Saudi Arabia, one female camel of a local breed, about 12 years old, exhibited multiple welldefined pale yellowish grey spherical masses of various sizes in both lungs. These were seen projecting from the lung surface or embedded in the lung tissue and measured between 1 and 10 cm across. The consistency was rather frail and the cut surface had a smooth appearance (Fig 1). The bronchial lymph nodes were