There is unclear information on veterinary anatomical literature about the dorsal scalene muscle and their presence in the ovine species. We think that the absence of this muscle can differentiate the source of the meat cuts of sheep and goats; due to in the goat the muscle is always present. We dissected 173 (26 male and 147 females) Corriedale sheeps and registered the presence, development and caudal insertion of scalenus dorsal muscle. The muscle was present only bilaterally in 14% and unilaterally in 15.5% of the 173 animals studied. We consider that this muscle as a vestigial and in state of regression. Therefore there is an important feature to distinguish a cut of meat of ovine and caprine, because the muscle is mostly absent in the ovine.