In the Sahara, livestock remains or representations found in mortuary contexts are very rare, unlike the Nile Valley where they are frequent: in Egypt during the pre-Dynastic period (Nagada 1, Maadien) or in North Sudan with the Nubian A-Group or in the late neolithic of Khartoum (El Kidded). Indeed, the sites of the eastern Sahara area (Egyptian or Sudanese) have yielded only a few early livestock burials, although it should be remembered that all funerary monuments appear to be rare in this region. Thus, the appearance of domestic species, replacing offerings of wild species (which may persist), is unfortunately poorly known during the neolithic periods of the Sahara.