From wikipedia: "The most recent genetic analysis confirms the archaeological evidence that the wild Bezoar ibex of the Zagros Mountains is the likely original ancestor of probably all domestic goats today."
"The name "tarpan" or "tarpani" is from a Turkic language (Kazakh or Kyrgyz) name meaning "wild horse".....In modern use, the term has been loosely used to refer to the predomesticated ancestor of the modern horse."
Just a slight change, but I think it'd be a nice one that would go along well with mouflons and aurochs.