Goats in Smiths Bible Dictionary

There appear to be two or three varieties of the common goat, Hircus agagrus, at present bred in Israel and Syria, but whether they are identical with those which were reared by the ancient Hebrews it is not possible to say. The most marked varieties are the Syrian goat(Capra mammorica, Linn.) and the Angora goat (Capra angorensis, Linn.), with fine long hair. As to the "wild goats," 1Sa 24:2; Job 39:1; Ps 104:18 it is not at all improbable that some species of ibex is denoted.