2. Circumcision
A part of religious practice in Islam, Coptic Christianity and the Ethiopian Orthodox Church, it involves removal of the foreskin in genitals of males and females.
In males, it is the removal of foreskin from the penis. Whereas, in female circumcision, the skin covering the clitoris or the clitoris itself is removed.
Various theories have been proposed as to its origin, including as a religious sacrifice and as a rite of passage marking a boy's entrance into adulthood.
3. Sky Burials
A religious practice of the Mongolians and Tibetans, they dissect and scatter the dead bodies on mountain tops for the scavengers to eat.
This is done because they do not believe in preserving the dead bodies.
4. Aghoris
They are a sect of Hindus and a re known for their cannibalistic and alcoholic rituals.
They eat left over from human dead bodies on the banks of river Ganges.
They drink in a bowl made of human skull. They apply ash from the human pyre. They are the followers of Hindu God – Lord Shiva.