A. Shofars must be from a Kosher animal. Rams are preferred because they recall the Binding of Issac. Cows’ horns are not considered appropriate because they recall the Golden Calf. Bent (not straight) horns are used, since they symbolize our “bent egos” before G-d on this Holy Day. Some things can disqualify a kosher shofar. Shofars can only be coated or covered as long as the sound is not altered. Cracked Shofar may not be good, depending on the size of the crack, and shofars have a minimum size. Check out our Shofar Factory on Campus Center, we did it nearly annually just before Rosh Hashanah, to see it and do it yourself.