Mentawai people are the native people of the Mentawai Islands, West Sumatra province, Indonesia, they live a semi-nomadic hunter-gatherer lifestyle in the coastal and rainforest environments of the islands. Mentawai sharpen their teeth with a chisel for aesthetic reasons. Tattooing is done with a needle and wood which is hammered on the needle by a shaman called Sikerei, Tattooing was an identity and a personal design and differences from region to region .