Insheepthereisastrongtendencyforcharacters，whichhaveapparentlybeenacquiredunderdomestication，tobecomeattachedeitherexclusivelytothemalesex，ortobemorehighlydevelopedinthisthanintheothersex。
Thusinmanybreedsthehornsaredeficientintheewe，thoughthislikewiseoccursoccasionallywiththefemaleofthewildmusmon。IntheramsoftheWallachianbreed，\"thehornsspringalmostperpendicularlyfromthefrontalbone，andthentakeabeautifulspiralform;intheewestheyprotrudenearlyatrightanglesfromthehead，andthenbecometwistedinasingularmanner。\"（3/82。’YouattonSheep’page138。）Mr。Hodgsonstatesthattheextraordinarilyarchednoseorchaffron，whichissohighlydevelopedinseveralforeignbreeds，ischaracteristicoftheramalone，andapparentlyistheresultofdomestication。（3/83。’JournalAsiat。Soc。
ofBengal’volume161847pages1015，1016。）IhearfromMr。Blyththattheaccumulationoffatinthefat—tailedsheepoftheplainsofIndiaisgreaterinthemalethaninthefemale;andFitzinger（3/84。’RacendesZahmenSchafes’s。77。）remarksthatthemaneintheAfricanmanedraceisfarmoredevelopedintheramthanintheewe。
Differentracesofsheep，likecattle，presentconstitutionaldifferences。
Thustheimprovedbreedsarriveatmaturityatanearlyage，ashasbeenwellshownbyMr。Simondsthroughtheirearlyaverageperiodofdentition。