The following description was prepared by William Gross:
The shofar was a ritual object used in every Jewish community in the world. Its shape often depended on what animals lived in the area whose horns were permitted for the use on the holy days of Rosh haShanah and Yom Kippur. The shofar used in Bulgaria was generally decorated with "teeth" at the large opening, as in this example. This shofar has some decoration carved into the length of the horn as well.