Table 2.

List of sheep breeds (Ovis aries), including the European mouflon (Ovis musimon), showing different horn phenotypes between sexes. Individuals of the respective sex and breed are either horned, polled, or the horn status is variable (there are polled, horned, and scurred individuals).

Horn Status Group	Breed	Species	Horn Status Females	Horn Status Males
Completely polled	Barbados Blackbelly Sheep *	Ovis aries	Polled	Polled
	Bentheimer Charollais	Ovis aries Ovis aries	Polled Polled	Polled Polled
	Coburger East Friesian Milk Sheep * German Black-headed Mutton German Brown Mountain German White Mountain Ile de France Kerry Hill Sheep * Lacaune Sheep * Merinoland Sheep * Poll Dorset Roughwool Pomeranian Sheep * Rhone Sheep Suffolk Texel Sheep *	Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries	Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled	Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled Polled
Completely horned	Grey Horned Heath * Scottish Blackface Sheep * Valais Blacknose Sheep Mouflon *	Ovis aries Ovis aries Ovis aries Ovis musimon	Horned Horned Horned Horned	Horned Horned Horned Horned
Variable in both sexes	African Dorper Sheep * Alpines Steinschaf Icelandic Sheep Krainer Steinschaf * Soay Sheep *	Ovis aries Ovis aries Ovis aries Ovis aries Ovis aries	Variable Variable Variable Variable Variable	Variable Variable Variable Variable Variable
Strictly sex-linked	Ethiopian Menz Cameroon Sheep *	Ovis aries Ovis aries	Polled Polled	Horned Horned
	Rambouillet	Ovis aries	Polled	Horned
Males horned, females variable	Walachian Sheep	Ovis aries	Variable	Horned
	Ouessant Sheep *	Ovis aries	Mostly polled	Horned

* Note that individuals of the marked breeds were genotyped as wild type for the goat PIS-related complex variant.