Hepatic ultrasonography was carried out on 45 donkeys (used for eductional purposes) for the presence of hydatid cysts. Eight donkeys representing 17.8% of the total examined animals had hepatic hydatid cysts. The age of the affected donkeys was 5-10 years. Hepatic hydatid cysts were imaged through only one intercostal space in 5 donkeys, through two adjacent spaces in one. through three scattered spaces in one and through 8 scattered spaces in another donkey. Ultrasonographically, the cyst appeared as unilocular rounded, oval or pear-shaped anechoic sac with a distinct thin echogenic capsule and strong distant enhancement . The diameter of the cysts was between 2.15cm and 10cm and their number was 15 cysts. In every affected animal, the diagnosis was confirmed by centesis and aspiration of the hydatid fluid under ultrasonographic guidance . The fluid was colourless, odourless and tansparent containing protoscolices microscopically. After ultrasonic examination, the all examined donkeys were euthaniszed and hepatic hydatid cysts were found in eight animals with 100% positive predictive value. The results of serum biochemical tests and histopathological findings were also discussed.