Every Jewish male baby is led by his parents to be circumsized on the eigth day after birth. This ceremony is called Brit Milah and is performed by a Mohel, an individual trained to do this. It is a replica of the Pact that God made with the first Patriarch Abraham and with his descendants.
Rabbi Yosi Srugo (www.miamimohel.com) is a specialist in this field and is interviewed by Rabbi Pynchas Brener, former Chief Rabbi of Venezuela. We will endeavor to answer your questions in this matter.