The current study was conducted from August 2003 to March 2004 with an attempt to determine the prevalence, morphological characteristics and susceptibility of Ogaden isolate of H.contorturs and Tetramisole. During the study period a total of 196 animals (114 sheep and 82 goats) of Ogaden ori gin were examined. The overall prevalence of Haemollchus species was 9 1.23% and 82.93 % in sheep and goats respectively. where as 37. 72% and 40.24% prevalence of Trichosirolngvlusgys axei was recorded in sheep and goats respectively.