The Karo or Kara is a small tribe with an estimated population between 1,000 and 3,000. They are closely related to the Kwegu tribe. They live along the east banks of the Omo River in southern Ethiopia and practice flood retreat cultivation. The crops that are grown by them are sorghum, maize and beans. Only small cattle are kept because of the tsetse flies. These flies are large and consume the blood of vertebrate animals.