<ul><li>The shofar should preferably be a ram’s horn. The horns of other kosher domestic animals are also acceptable except for those of a bull or ox.</li><li>Non-Yemenites should not use shofars made from the horns of Kudus if there is a ram’s horn shofar available.</li><li>The shofar must be longer than a Tefach (handbreadth) so that it is visible on both sides of the ba’al tokei'a’s hand when he is blowing it.</li><li>A cracked shofar may be disqualified. One should not use it unless he ascertains its precise Halachic status.</li></ul>

The Shofar